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B1 verb /ˈhɛdɪŋ/

heading

驶向
Meaning
Moving in a particular direction.
Example
The ship is heading toward Antarctica.
船只正驶向南极洲。
A1 interjection /həˈloʊ/

hello

哈啰
Meaning
a greeting or expression used when meeting someone or starting a conversation
Example
She answered the phone with a cheerful hello.
她高兴地接起电话说了声哈啰。
B2 verb /ˈhʌvər/

hover

在空中静止，不向前或后移动
Meaning
to remain in the air in one place without moving forward or backward
Example
The helicopter hovered over the city.
直升机悬停在城市上空。
C2 noun /hɒtʃ pɒtʃ/

Hotch potch

杂烩
Meaning
A mixed dish; a hodgepodge of ingredients cooked together
Example
She made a delicious hotch potch with rice, lentils, and vegetables.
她做了一道美味的霍奇波奇，里面有米饭、扁豆和蔬菜。
C2 noun, verb /ˈhæmstrɪŋ/

hamstring

大腿后部的肌腱; 作为动词，限制或严重削弱某人或某物的效能
Meaning
a tendon at the back of the thigh; as a verb, to cripple or severely restrict the effectiveness of someone or something.
Example
Budget cuts hamstrung the organization’s plans.
预算削减削弱了该组织的计划。
C2 noun /ˌhaɪpəkəˈnektɪvɪti/

hyperconnectivity

超连接性
Meaning
The state of being extensively connected to other people, places, information, etc., through digital technology.
Example
Hyperconnectivity has changed the dynamics of human interaction.
超连接性改变了人类互动的动态。
A2 noun /ˈhɛdeɪk/

headache

头痛
Meaning
a continuous pain in the head; something that causes worry or difficulty
Example
Too much screen time can give you a terrible headache.
过多的屏幕时间可能会导致你出现严重的头痛。
B1 noun/verb /hɪnt/

hint

提示
Meaning
a small piece of advice or suggestion; to suggest something indirectly
Example
She gave me a hint about the surprise party.
她给了我一个关于惊喜派对的提示。
B1 noun /ˈhaʊswaɪf/

housewife

家庭主妇
Meaning
a married woman who manages a household and whose main occupation is caring for her family and home
Example
She chose to work as a housewife while raising her children.
她在抚养孩子期间选择当一名家庭主妇。
C2 adjective /ˈhʌski/

husky

Meaning
deep, rough, and slightly hoarse voice; also refers to a strong and sturdy build
Example
He spoke in a husky voice after shouting all day.
A2 verb /hɑːrm/

harm

伤害
Meaning
to cause damage, injury, or hurt to someone or something
Example
Smoking can harm your health.
吸烟可能会损害你的健康。
A2 pronoun /hɪmˈself/

himself

他自己
Meaning
Used to emphasize that a male person does something by his own effort.
Example
He fixed the car himself.
他自己修好了车。
B1 noun /ˈhɪr.ɪŋ/

Hearing

听力; 听证会
Meaning
the faculty of perceiving sounds; a session in which testimony and arguments are heard
Example
The elderly man's hearing had deteriorated, so he needed to wear a hearing aid.
老年人的听力已经恶化，因此他需要佩戴助听器。
B2 adjective /ˈheɪsti/

Hasty

匆忙的; 急促的
Meaning
done or acting with excessive speed or urgency; hurried
Example
Don't make hasty decisions when you're angry.
生气时不要做出匆忙的决定。
C1 verb /hjuːˈmɪlieɪt/

humiliate

侮辱
Meaning
to make someone feel ashamed or foolish by injuring their dignity
Example
He was humiliated by his public failure.
他因公共失败而感到羞辱。
C1 noun ˈhaɪ.drə.dʒən ˈpaʊ.əd bʌsɪz

hydrogen-powered buses

氢能公交车
Meaning
Buses powered by hydrogen fuel cells that produce only water vapor as emission.
Example
Hydrogen-powered buses reduce air pollution.
氢能公交车减少空气污染。
C1 adjective /ˈhɑːrdi/

hardy

坚韧，强健
Meaning
Strong, robust, and capable of enduring difficult conditions.
Example
Hardy plants can survive the harsh winter.
坚韧的植物能在严寒的冬季生存。
B2 noun /ˈhæz.ərd/

Hazard

危害; 风险
Meaning
a danger or risk; something that poses a threat to safety
Example
Smoking is a serious health hazard that can lead to lung cancer and heart disease.
吸烟是一种严重的健康危害，可能导致肺癌和心脏病。
C2 noun /ˈhɑːtʃ.pɑːtʃ/

Hotchpotch

杂乱无章的混合物; 一堆混杂的东西
Meaning
a confused mixture; a jumbled assortment of things
Example
The room was a hotchpotch of old furniture, books, and random decorations.
房间里堆满了旧家具、书籍和随意摆放的装饰品，杂乱无章。
B1 noun /hel/

Hell

地狱; 痛苦的状态; 极其不愉快的经历
Meaning
a place regarded in various religions as a spiritual realm of evil and suffering; an extremely unpleasant experience
Example
Working in the factory during summer was absolute hell due to the extreme heat.
在工厂里工作时，由于极端的高温，简直是地狱。
B2 noun helθ ˈhæzərdz

health hazards

健康危害
Meaning
Risks or dangers to physical health and well-being that can cause illness or injury.
Example
Plastic usage leads to significant health hazards.
塑料使用导致重大的健康危害。
C1 noun /ˈherən/

Heron

苍鹭
Meaning
large wading bird with long legs and neck that feeds on fish
Example
The heron stood motionless by the water's edge, waiting for fish.
苍鹭静静地站在水边，等待着鱼。
C2 adjective /həˈmɑː.lə.ɡəs/

homologous

同源的 (结构)
Meaning
Having the same relation, relative position, or structure, especially due to evolutionary origin.
Example
The wings of bats and the arms of humans are homologous structures.
蝙蝠的翅膀和人类的手臂是同源结构。
A1 noun /hæt/

Hat

帽子
Meaning
a covering for the head, typically with a brim and worn outdoors
Example
He always wears a hat when working in the garden.
他在花园工作时总是戴着帽子。
B1 noun /ˈhʌntər/

hunter

猎人
Meaning
a person or animal that hunts animals for food or sport
Example
The hunter tracked the deer through the forest.
猎人追踪鹿穿越森林。
C1 adverb /ˈhɛdˌlɔŋ/

headlong

全速前进
Meaning
With the head leading; in a rush or without thinking.
Example
She rushed headlong into the new project.
她全速前进地投入了新的项目。
C2 noun /ˌɒnəˈreəriəm/

honorarium

酬金
Meaning
A payment given for professional services that are rendered without a fee.
Example
The guest lecturer received an honorarium for her talk.
那位客座讲师因其讲座而获得了酬金。
B1 noun /ˈhaɪdʒiːn/

hygiene

Meaning
Conditions or practices conducive to maintaining health and preventing disease.
Example
Good hygiene is essential for preventing the spread of infections.
C1 noun /ˈhɪr.seɪ/

Hearsay

谣言
Meaning
information received from other people that one cannot adequately substantiate; rumor
Example
The accusations were based on hearsay rather than concrete evidence or eyewitness testimony.
这些指控是基于谣言，而不是确凿的证据或目击者证词。
C1 adjective /ˌhaɪdroʊɪˈlɛktrɪk/

hydroelectric

水力发电
Meaning
Relating to or denoting the generation of electricity using flowing water.
Example
The country invested heavily in hydroelectric power plants.
该国在水力发电厂上进行了大量投资。
C2 noun /ˌhaɪpəˈkɒndrɪæk/

hypochondriac

忧郁症患者
Meaning
a person who is excessively worried about having a serious illness
Example
She is a hypochondriac who visits the doctor every week.
她是一个每周去看医生的忧郁症患者。
C2 noun /ˈhʌvəl/

hovel

Meaning
a small, poorly built, and dirty house
Example
The refugees lived in a makeshift hovel.
C2 noun /ˈhɒdʒ.pɒdʒ/

hodgepodge

混杂物
Meaning
A confusing mixture of different things; a jumble.
Example
The essay was a hodgepodge of unrelated ideas.
这篇文章是一些不相关的想法的混杂物。
C2 adjective /ˈhɜːrsuːt/

hirsute

Meaning
Having a lot of hair, especially in an unusual place.
Example
The hirsute man stood out in the crowd with his long beard.
C2 noun /ˈhen.ə/

Henna

海娜
Meaning
a reddish-brown dye made from the powdered leaves of a tropical shrub, used to color hair and decorate skin
Example
The bride's hands were beautifully decorated with intricate henna patterns for her wedding ceremony.
新娘的手被精美的指甲花纹装饰，用于她的婚礼仪式。
C2 verb /ˈhɑːbəl/

hobble

蹒跚
Meaning
to walk awkwardly with difficulty, usually due to injury
Example
He hobbled across the room after twisting his ankle.
他在扭伤脚踝后，蹒跚地走过房间。
B2 noun /ˈhɑːr.bər/

Harbour

港口
Meaning
a place on the coast where vessels may find shelter; a place of safety or refuge
Example
The fishing boats returned safely to the harbour before the storm hit the coastline.
渔船在风暴袭击海岸之前安全地回到了港口。
B2 adjective /ˈhɜː.bəl/

herbal

草药的
Meaning
Made from or containing herbs, especially for medicinal purposes.
Example
Herbal remedies were widely used here.
这里广泛使用草药疗法。
B1 noun /ˈhændˌraɪ.tɪŋ/

handwriting

手写字
Meaning
the style or manner of writing by hand.
Example
Her handwriting is very neat and easy to read.
她的手写字非常整齐，容易阅读。
C1 adjective /ˌhaɪəˈrɑː.kɪ.kəl/

hierarchical

等级的
Meaning
arranged in order of rank or authority
Example
The company has a strict hierarchical structure.
该公司有一个严格的等级结构。
C1 noun /ˈhed.weɪ/

Headway

进展; 进步; 向前迈进
Meaning
forward movement or progress, especially when this is slow or difficult
Example
Despite the challenges, the research team made significant headway in developing the new vaccine.
尽管面临挑战，研究团队在开发新疫苗方面取得了显著的进展。
B2 noun /hʊd/

Hood

蛇头罩
Meaning
the expandable neck region of certain snakes like cobras; a covering for the head
Example
The cobra spread its hood when it felt threatened.
眼镜蛇在感到威胁时展开了它的帽子。
A1 noun /her/

Hair

头发
Meaning
any of the fine thread-like strands growing from the skin of humans and animals
Example
She decided to cut her long hair short for a fresh new look this summer.
她决定在这个夏天剪短她的长发，打造一个清新的新形象。
C2 adjective /həˈrɛtɪkəl/

heretical

异端
Meaning
Relating to or characterized by departure from accepted beliefs or standards, especially in religion.
Example
The priest condemned the book as heretical.
牧师将这本书谴责为异端。
B2 noun /heɪ/

hay

干草
Meaning
grass that has been cut, dried, and stored for use as animal feed
Example
The cows were eating hay in the barn.
牛在谷仓里吃干草。
C2 noun /ˈhaɪdrə/

hydra

九头蛇
Meaning
a many-headed serpent in Greek mythology; a problem that seems to grow worse when attempts are made to solve it
Example
Corruption is like a hydra, hard to defeat completely.
腐败就像九头蛇，完全根除它非常困难。
C2 noun /ˈhaɪərəˌɡlɪf/

hieroglyph

象形文字
Meaning
A picture or symbol used in ancient writing systems, especially Egyptian writing.
Example
The walls of the temple were covered in hieroglyphs.
寺庙的墙壁上覆盖着象形文字。
C2 noun /ˈhjuːməs/

humus

腐殖土
Meaning
The dark, organic material in soil formed from decayed plants and animals.
Example
The gardener enriched the soil with humus to improve plant growth.
园丁将腐殖土混入土壤中以促进植物生长。
A1 noun /hoʊˈtɛl/

hotel

酒店
Meaning
A building where people pay to stay and sleep, usually for short periods.
Example
We stayed at a hotel near the beach.
我们住在靠近海滩的酒店。
C2 noun /ˈhɛfər/

heifer

小母牛
Meaning
a young cow that has not borne a calf
Example
The farmer raised a heifer for dairy production.
农民为乳制品生产养了一头小母牛。
B1 adverb /ˈhoʊpfəli/

hopefully

希望
Meaning
in a hopeful manner; expressing hope or optimism
Example
Hopefully, the weather will be nice tomorrow.
希望明天天气会很好。
C2 noun /ˈhɛklər/

heckler

打扰者
Meaning
A person who interrupts a speaker with rude or aggressive comments.
Example
The politician remained calm despite the heckler shouting from the crowd.
尽管人群中有打扰者大声叫喊，政治家仍然保持冷静。
B2 verb /hætʃ/

hatch

孵化
Meaning
to emerge from an egg; to devise or create a plan
Example
The bird will hatch from its egg soon.
鸟将从蛋中孵化出来。
B1 noun ˌhjuː.mən ˈraɪts

human rights

人权
Meaning
A right that is believed to belong justifiably to every person.
Example
Human rights protect individual freedoms.
人权保护个人自由。
C1 noun /ˈhɑː.mɪdʒ/

Homage

致敬; 尊敬; 颂扬
Meaning
special honor or respect shown publicly; tribute paid to someone in recognition of their merit
Example
The memorial service was a touching homage to the brave soldiers who sacrificed their lives.
纪念活动是对那些为国捐躯的勇敢士兵的感人致敬。
C2 noun /haɪˈdrɒmɪtər/

hydrometer

Meaning
An instrument used to measure the density or specific gravity of liquids.
Example
The brewer used a hydrometer to test the sugar content of the solution.
B1 adjective hɪˈstɔːrɪk

historic

历史的
Meaning
Famous or significant in history, or potentially so.
Example
Victory Day is a historic moment for Bangladesh.
胜利日是孟加拉国的一个历史性时刻。
B1 noun /ˈhaɪ.weɪ/

highway

高速公路
Meaning
A main road, especially one connecting major towns or cities.
Example
The highway was blocked due to an accident.
由于事故，高速公路被封锁了。
C1 noun /ˈhɒrəˌskoʊp/

horoscope

星座运势
Meaning
A forecast of a person's future based on the positions of the stars and planets at their birth.
Example
She read her horoscope every morning to see what the stars predicted.
她每天早上读星座运势，看星星预测了什么。
C1 verb /ˈhaɪtən/

heighten

提高
Meaning
to make or become greater in intensity or degree
Example
The announcement served to heighten the excitement in the room.
公告有助于提高房间里的兴奋。
C2 noun /hæp/

hap

运气，幸运，偶然
Meaning
luck, fortune, or chance occurrence
Example
By sheer hap, he discovered the old letter hidden in the drawer.
凭借运气，他发现了藏在抽屉里的旧信。
A1 adjective /haɪ/

high

高
Meaning
At or to a great height; greater than normal in amount, degree, or intensity.
Example
The mountain peak is very high.
山顶非常高。
B2 adjective haɪˈdʒiː.nɪk

hygienic

卫生的
Meaning
Conducive to maintaining health and preventing disease, especially by being clean.
Example
Maintaining hygienic conditions in hospitals is crucial.
在医院保持卫生条件至关重要。
B2 adjective /hɑːrˈmoʊ.ni.əs/

harmonious

和谐的, 协调的, 一致的
Meaning
Characterized by agreement or concord; forming a pleasing or consistent whole.
Example
A harmonious work environment boosts productivity.
和谐的工作环境提高了生产力。
B2 noun /həˈraɪ.zən/

horizon

地平线
Meaning
the line where the earth seems to meet the sky; the limit of one's knowledge, experience, or interest
Example
The sun disappeared below the horizon.
太阳消失在地平线下。
B1 noun /hjuːˈmænɪti/

humanity

人性
Meaning
the quality of being human; kindness or compassion towards others; all human beings collectively
Example
Kindness is one of the greatest expressions of humanity.
善良是人性最伟大的表现之一。
C1 noun /hɪˈpɑː.krə.si/

Hypocrisy

伪善
Meaning
the practice of claiming to have moral standards that one does not actually possess; insincerity
Example
His hypocrisy was exposed when he criticized others for the same mistakes he had made.
当他因为自己犯过的同样错误而指责别人时，他的伪善暴露无遗。
B2 adjective /ˈhɑːrmləs/

Harmless

无害的; 无辜的; 安全的
Meaning
not able or likely to cause harm; innocent; safe
Example
The snake looks dangerous but it's actually harmless.
蛇看起来很危险，但它实际上是无害的。
C2 noun /ˈhɔːθɔːrn/

hawthorn

有刺灌木
Meaning
A thorny shrub or small tree with white or pink flowers, often used for hedges.
Example
The garden was lined with blooming hawthorn bushes.
花园里种满了盛开的山楂灌木。
C1 noun /hʌl/

hull

船体 / 种子外壳
Meaning
The outer covering of a seed or fruit; also the main body of a ship.
Example
The sailors inspected the ship’s hull for any damage.
水手们检查了船体是否有损坏。
C2 noun /hoʊ/

Hoe

锄头
Meaning
a gardening tool with a thin metal blade used for breaking up soil and removing weeds
Example
The farmer used a hoe to remove weeds from his vegetable garden.
农夫使用锄头从他的蔬菜园中移除杂草。
C1 verb /hiːd/

heed

注意
Meaning
to pay attention to; to take notice of
Example
You should heed the teacher's advice.
你应该听从老师的建议。
A2 adverb /ˈɒnɪstli/

honestly

诚实地
Meaning
in a truthful, sincere, or fair way
Example
She spoke honestly about her mistakes.
她诚实地谈论了自己的错误。
C1 noun /ˈhɔːl.mɑːrk/

hallmark

标志性特征
Meaning
a typical characteristic or feature of someone or something
Example
Honesty is the hallmark of a good leader.
诚实是一个好领导者的标志性特征。
C1 adverb /ˈhɑr.tɪ.li/

Heartily

衷心地; 全心全意
Meaning
in a sincere and enthusiastic manner; wholeheartedly
Example
She heartily welcomed her guests to the party.
她衷心地欢迎她的客人来到派对。
C1 verb /ˈheɪsən/

hasten

加速
Meaning
To move or act quickly; to cause something to happen sooner.
Example
He hastened to finish his work before the deadline.
他急忙在截止日期前完成工作。
C1 adjective /ˈhæpləs/

hapless

不幸的, 值得同情的
Meaning
unfortunate, unlucky, deserving pity
Example
The hapless traveler lost his passport on the very first day.
那个不幸的旅行者在第一天就丢失了护照。
C1 noun /ˌhoʊmiˈɑːpəθi/

homeopathy

顺势疗法
Meaning
a system of alternative medicine based on treating diseases with highly diluted substances
Example
He believes in homeopathy for treating common colds.
他相信顺势疗法来治疗常见感冒。
A1 pronoun /hɜːr/

her

她
Meaning
used to refer to a female person or animal already mentioned or easily identified
Example
I saw her at the park yesterday.
我昨天在公园看见了她。
C2 adjective /ˈhæl.si.ən/

halcyon

宁静的
Meaning
calm, peaceful, and happy; denoting a period of time in the past that was idyllically happy and peaceful
Example
She often reminisces about the halcyon days of her childhood.
她经常回忆起她童年时宁静的日子。
B2 adjective /ˈhɑːrti/

Hearty

热情友好; 丰富而滋养
Meaning
enthusiastic and friendly; substantial and nourishing
Example
He gave us a hearty welcome when we arrived at his home.
当我们到达他家时，他给了我们热情的欢迎。
C2 adjective /haɪˈbɜːrnəl/

hibernal

Meaning
Relating to or occurring in winter.
Example
The hibernal season is often harsh in the mountains.
B2 noun /hɔːk/

Hawk

猎鹰
Meaning
a bird of prey with broad wings and strong talons used for hunting
Example
The hawk soared high above the field hunting for prey.
猎鹰在田野上空飞翔，寻找猎物。
B2 noun /ˈhæn.di.krɑːft/

Handicraft

手工艺
Meaning
an activity involving the making of decorative domestic or other objects with the hands; handmade artistic work
Example
The local market featured beautiful handicrafts made by skilled artisans from the region.
当地市场展示了由该地区熟练工匠制作的美丽手工艺品。
C1 noun /ˈhɪntərlænd/

hinterland

内陆地区
Meaning
The remote or less developed areas away from the coast or a city.
Example
The farmers came from the rural hinterland to sell their produce in the city.
农民们从乡村的内陆地区来到城市销售他们的产品。
B1 verb /ˈhaɪˌlaɪt/

highlight

突出
Meaning
to emphasize or make something stand out
Example
The teacher highlighted the most important points in the text.
老师在文本中强调了最重要的要点。
B2 noun /həˈraɪ.zənz/

horizons

地平线
Meaning
The limit of a person's mental perception, experience, or interest.
Example
The telescope opens new horizons for astronomy.
望远镜为天文学打开了新的地平线。
C2 verb /haɪ/

hie

赶快去
Meaning
to go quickly; hasten
Example
He hied to the station to catch the train.
他赶快去车站赶火车。
B2 noun /ˈɑːnər/

honor

荣誉
Meaning
high respect; great esteem
Example
He received an award in honor of his achievements.
他因他的成就而获得了一项荣誉。
A2 noun /ˈheəkʌt/

haircut

理发
Meaning
the act or style of cutting hair
Example
I got a haircut before the wedding.
我在婚礼前理了发。
B1 noun /ˈhæm.ər/

Hammer

锤子
Meaning
a tool with a heavy metal head for hitting nails or breaking things
Example
She used a hammer to nail the picture frame to the wall.
她用锤子把画框钉在墙上。
A2 noun /ˈhæb.ɪt/

habit

习惯
Meaning
A settled or regular tendency or practice, especially one that is hard to give up.
Example
Eye rubbing is a harmful habit.
揉眼睛是一种有害的习惯。
C1 adjective /ˌhɔːrtɪˈkʌltʃərəl/

horticultural

园艺相关
Meaning
Relating to the art or practice of garden cultivation and management.
Example
She studied horticultural science at the university.
她在大学学习了园艺科学。
C1 noun /ˈhaɪ.nəs/

Highness

陛下; 王室头衔
Meaning
a title given to a person of royal rank; the quality or state of being high or elevated
Example
Your Highness, the royal carriage is ready to take you to the state banquet this evening.
陛下，皇家马车已准备好将您带到今晚的国宴。
B2 noun /ˈhoʊmlænd/

homeland

故乡
Meaning
a person's native country or region
Example
She returned to her homeland after ten years abroad.
她在国外十年后回到了她的故乡。
A2 noun /ˈhɑː.bi/

Hobby

爱好; 休闲活动; 消遣
Meaning
an activity done regularly in one's leisure time for pleasure; a pastime or recreation
Example
Photography became her favorite hobby after she received a camera for her birthday.
摄影成为她的最爱爱好，在她生日时收到了相机。
C2 noun /hɑrˈmoʊniəm/

Harmonium

风琴
Meaning
a keyboard musical instrument similar to an organ, using air to produce sound
Example
She played devotional songs on the harmonium at the temple.
她在寺庙用风琴演奏虔诚的颂歌。
B2 noun /ˈhɔːr.ər/

Horror

恐怖; 强烈的恐惧感; 厌恶
Meaning
an intense feeling of fear, shock, or disgust; something that causes such feelings
Example
The survivors described the horror of the earthquake that destroyed their entire village.
幸存者描述了地震的恐怖，地震摧毁了他们整个村庄。
C2 noun /ˈhɔːzər/

hawser

用于系船或拖船的粗绳
Meaning
A thick rope or cable used in mooring or towing a ship.
Example
The sailors secured the ship to the dock with a heavy hawser.
水手们用一根重的豪泽把船固定在码头。
B2 noun /ˈhændlɪŋ/

handling

处理
Meaning
the act of managing or dealing with something or someone
Example
His handling of the situation was impressive.
他对情况的处理令人印象深刻。
A2 verb /hiːt/

heat

加热
Meaning
to make or become hot or warm
Example
Please heat the soup before serving.
请在上菜前加热汤。
A1 pronoun /hɜːrz/

hers

她的（女性的）东西
Meaning
used to refer to something that belongs to or is associated with a female person previously mentioned or easily identified.
Example
That blue bag is hers.
那个蓝色的包是她的。
B2 noun /hɪp/

hip

臀部
Meaning
The part of the body on either side of the pelvis, or informal: trendy and fashionable.
Example
She put her hands on her hips.
她把手放在臀部上。
A2 noun /ˈhæn.dəl/

Handle

把手; 握柄; 处理
Meaning
the part by which a thing is held, carried, or controlled; to manage or deal with something
Example
The suitcase has a sturdy handle that makes it easy to carry through the airport.
这只行李有一个坚固的把手，使得通过机场时更加容易。
C2 noun /ˌhaɪdroʊməˈkænɪks/

hydromechanics

水力学
Meaning
The study of the mechanical properties and behavior of fluids in motion and at rest.
Example
Hydromechanics provides the foundation for naval architecture.
水力学为船舶设计提供了基础。
C1 adjective /haɪˈdrɔːlɪk/

hydraulic

液压的
Meaning
operated by the pressure of liquid, especially water or oil
Example
The mechanic repaired the hydraulic system of the machine.
机械师修理了机器的液压系统。
C2 noun /ˈhæknɪ/

hackney

出租马, 陈腐
Meaning
a horse kept for ordinary riding or hire; also used for something overused or trite
Example
The old hackney was still pulling the carriage.
那匹旧出租马仍然拉着马车。
B1 adverb /ˌhæfˈweɪ/

halfway

半路上
Meaning
at or to a point equal in distance between two points
Example
We met halfway between the two towns.
我们在两个城市之间的半路上相遇。
C1 noun ˌhaɪ.drəˈlɒdʒ.ɪ.kəl ˈsaɪ.kəl

hydrological cycle

水文循环
Meaning
The cycle of processes by which water circulates between the earth's oceans, atmosphere, and land.
Example
The hydrological cycle ensures continuous water movement in nature.
水文循环确保自然界中水的持续流动。
B2 noun ˈhɑːrvɪstɪŋ

harvesting

收获
Meaning
The process of gathering a ripe crop from the fields or collecting natural resources.
Example
Unregulated harvesting affects the biodiversity of oceans.
不受监管的收获影响着海洋的生物多样性。
C1 verb /hoʊn/

hone

磨锐，改善技能
Meaning
To sharpen a blade or to improve a skill through practice.
Example
She honed her presentation skills before the big meeting.
她在大会议之前磨练了自己的演讲技巧。
C1 verb ˈhɪndər

hinder

阻碍
Meaning
To obstruct or delay the progress of something
Example
Excessive rain hinders vegetable growth.
过多的雨水阻碍了蔬菜的生长。
C2 noun /ˈhæŋ.kər.ɪŋ/

hankering

渴望
Meaning
a strong desire or craving for something.
Example
She had a hankering for chocolate late at night.
她深夜时对巧克力有了强烈的渴望。
A1 verb /ˈhæpən/

happen

发生
Meaning
to occur or take place; to come about by chance
Example
What happened at the meeting yesterday?
昨天会议上发生了什么?
A2 noun ˈhɪs.tər.i

History

历史
Meaning
The study of past events; a chronological record of events and heritage.
Example
The history of ancient civilizations fascinates scholars.
古代文明的历史吸引着学者。
B1 noun/verb /ˈhʌntɪŋ/

hunting

狩猎
Meaning
the activity of chasing and killing wild animals
Example
Hunting is strictly regulated in many countries.
狩猎在许多国家受到严格监管。
C2 verb /ˈhɑːrkən/

hearken

专心听
Meaning
To listen attentively; to give heed.
Example
He would hearken to his mentor’s advice before making decisions.
他在做决定之前，会专心听导师的建议。
B2 adjective /ˈhez.ɪ.tənt/

Hesitant

犹豫不决的; 不确定的; 拒绝的
Meaning
uncertain or unwilling to act; showing doubt or reluctance
Example
She was hesitant to accept the job offer.
她在接受工作邀请时犹豫不决。
C1 adjective /ˈhiːdləs/

heedless

疏忽
Meaning
showing a reckless lack of care or attention
Example
He drove with heedless disregard for the rules.
他开车时对规则表现出疏忽。
A2 interjection /hʌ/

huh

你说什么?
Meaning
used to express confusion, surprise, or that you did not hear something
Example
Huh? What did you say?
哈？你说什么?
A1 noun, numeral /ˈhʌndrəd/

hundred

一百
Meaning
the number 100
Example
There are a hundred students in the hall.
大厅里有一百个学生。