B2 adjective /ˈprɛf(ə)rəb(ə)l/

preferable

更可取

Meaning

more desirable or suitable; better than something else

Example

It is preferable to take the train rather than drive in heavy traffic.

在严重交通堵塞的情况下，最好选择乘坐火车。

B2 noun /prɪˈskrɪpʃən/

prescription

处方

Meaning

A written order from a doctor for the preparation and administration of a medicine; also, a recommendation or authoritative rule.

Example

The doctor gave her a prescription for antibiotics.

医生给她开了抗生素的处方。

B2 adjective /prəˈnaʊnst/

pronounced

明显的

Meaning

very noticeable or strongly marked

Example

There is a pronounced difference between the two styles.

这两种风格之间有明显的区别。

B2 noun ˌprez.əˈveɪ.ʃən

preservation

保存

Meaning

The action of maintaining something in its original or existing state; protection from harm or damage.

Example

Proper preservation extends the lifespan of machinery.

适当的保存延长了机器的使用寿命。

B2 noun /plænˈteɪʃən/

plantation

种植园

Meaning

a large area of land where crops are grown, often for commercial purposes

Example

The sugarcane plantation stretched for miles across the valley.

甘蔗种植园沿着山谷延伸数英里。

B2 adverb /pəˈtɛnʃəli/

potentially

潜在地

Meaning

with the possibility of becoming something in the future

Example

This project is potentially a huge success.

这个项目潜在地可能是一个巨大的成功。

B2 adjective /prəˈspɛktɪv/

prospective

前景的

Meaning

likely or expected to happen in the future; potential

Example

The company is meeting with prospective clients next week.

公司将于下周与潜在客户会面。

B2 noun /pɪtʃ/

pitch

音调，投掷

Meaning

the quality of a sound; the level or degree of intensity; a throw or toss

Example

The singer's pitch was perfect during the performance.

歌手的音调在表演中完美无瑕。

B2 noun pɛsts

pests

害虫, 害动物

Meaning

Harmful or troublesome creatures, especially insects or small animals that damage crops, food, or living spaces.

Example

Pests can damage crops and cause diseases.

害虫可能损害作物并引发疾病。

B2 adjective /ˌprɒb.ləˈmæt.ɪk/

Problematic

有问题的; 导致问题的

Meaning

causing problems; troublesome; difficult to deal with

Example

The new policy changes are problematic and need to be reviewed.

新政策的变化是有问题的，需要审查。

B2 noun fəˈnɒm.ɪ.nə

phenomena

现象

Meaning

Facts or situations that are observed to exist or happen, especially ones whose cause or explanation is in question.

Example

Phenomena like floods disrupt agricultural systems.

像洪水这样的现象扰乱了农业系统。

B2 noun /prəˈseʃ.ən/

Procession

游行; 队列;

Meaning

a group of people or vehicles moving forward in an organized way, especially as part of a ceremony

Example

The wedding procession walked slowly to the church.

婚礼游行缓慢地走向教堂。

B2 noun /piːk/

Peak

山顶

Meaning

the highest point of a mountain or hill; the maximum level or intensity

Example

The climbers reached the peak of Mount Everest.

登山者到达了珠穆朗玛峰的山顶。

B2 noun /ˈpæd.i/

Paddy

未加工的稻米; 稻田

Meaning

rice in its natural state before processing; a field where rice is grown

Example

The farmers worked hard in the paddy fields during harvest season.

农民们在收割季节里在稻田里辛勤工作。

B2 noun /ˈpredʒ.ə.dɪs/

Prejudice

偏见

Meaning

preconceived opinion that is not based on reason or actual experience

Example

We must fight against prejudice and discrimination in our society.

我们必须在我们的社会中与偏见和歧视作斗争。

B2 noun /ˈpen neɪm/

Pen-name

笔名

Meaning

a fictitious name used by an author instead of their real name; a pseudonym

Example

Mark Twain was the pen-name of Samuel Clemens.

马克·吐温是塞缪尔·克莱门斯的笔名。

B2 adjective /prɪˈdɪktəbəl/

predictable

可预测的

Meaning

able to be predicted or foreseen

Example

His reactions were predictable based on his past behavior.

他的反应是可以预测的，基于他的过去行为。

B2 noun pɑrˈtɪʃən

partition

分割

Meaning

The action of dividing or being divided into parts; separation.

Example

Partition caused unrest.

分割引发了不安。

B2 noun /ˈfɪʃ.ɪŋ/

phishing

通过欺诈手段窃取信息

Meaning

The fraudulent practice of sending emails purporting to be from reputable companies in order to induce individuals to reveal personal information.

Example

Phishing emails often trick people into revealing passwords.

钓鱼邮件通常会欺骗他人泄露密码。

B2 verb /pərˈsuː/

pursue

追求

Meaning

to follow or chase with the intent to catch or achieve something

Example

She decided to pursue her dreams of becoming a doctor.

她决定追求成为医生的梦想。

B2 noun /ˈpɑːrtɪkəl/

particle

粒子

Meaning

a very small piece or amount of something

Example

Dust particles floated in the air near the window.

尘土粒子在靠近窗户的空气中飘浮。

B2 verb /prɪˈveɪl/

prevail

占上风

Meaning

To prove more powerful or superior; to be widespread or common.

Example

Justice will always prevail over injustice.

正义总会战胜不公正。

B2 adjective /pəˈsɪs.tənt/

persistent

坚持不懈

Meaning

continuing to exist or endure over a prolonged period

Example

Despite many setbacks, her persistent efforts led to success.

尽管遇到许多挫折，她的坚持不懈最终带来了成功。

B2 verb /pʌmp/

pump

抽水

Meaning

to force liquid or gas to move in a particular direction using a device

Example

They pumped water from the well into the tank.

他们把水从井里抽到水箱里。

B2 noun, verb /ˈpɛdəl/

pedal

脚操作的杠杆

Meaning

A foot-operated lever for powering or controlling a mechanism, especially on a bicycle.

Example

He pressed down hard on the bicycle pedal.

他用力踩下了自行车的踏板。

B2 adjective /prəˈdʌk.tɪv/

Productive

高效的

Meaning

efficient; yielding good results; fruitful

Example

Working from home has made me more productive than ever before.

在家工作让我比以往更高效。

B2 noun /ˈprɛmɪs/

premise

前提 / 建筑物

Meaning

a statement or idea on which reasoning or an argument is based; also a building or property

Example

His argument was based on a false premise.

他的论点是建立在一个错误的前提上的。

B2 noun /prəˈvɪʒ.ən/

Provision

供给

Meaning

supplies of food and other necessary things; arrangement or preparation

Example

The government made provision for emergency supplies during the flood.

政府为洪水期间的紧急供应作出了安排。

B2 verb /plʌndʒ/

plunge

迅速跳入或潜水；突然下降

Meaning

to jump or dive quickly; to fall sharply

Example

She plunged into the swimming pool.

她跳进了游泳池。

B2 noun /proʊˈbeɪʃən/

probation

试用期

Meaning

a period of testing or supervision, especially for offenders or new employees

Example

He was placed on probation for six months.

他被安排了六个月的试用期。

B2 noun, verb, adjective /ˈpeɪtənt/ or /ˈpætənt/

patent

专利

Meaning

a government license granting exclusive rights to an inventor; also to obtain such rights

Example

He patented his new invention to protect it from being copied.

他为保护他的发明不被复制而申请了专利。

B2 noun /prəˈtɛktər/

protector

保护者

Meaning

a person or thing that protects someone or something

Example

The dog was seen as the family's protector.

这只狗被视为家庭的保护者。

B2 noun /saɪˈkaɪətrɪst/

psychiatrist

精神科医生

Meaning

a medical doctor specializing in the diagnosis and treatment of mental illness

Example

The psychiatrist prescribed medication for the patient’s anxiety.

精神科医生为患者的焦虑开了药。

B2 noun /prəˈtɛstər/

protester

抗议者

Meaning

a person who takes part in a protest or demonstration

Example

The protester spoke passionately about the cause.

抗议者激情洋溢地谈论了这个原因。

B2 noun /pəˈnɪn.sjə.lə/

Peninsula

半岛

Meaning

a piece of land that is almost completely surrounded by water but connected to the mainland

Example

The Korean Peninsula is located in East Asia.

朝鲜半岛位于东亚。

B2 noun /ˈpen.ʃən/

Pension

养老金

Meaning

a regular payment made to someone who is no longer working because of age or disability

Example

After retirement, he receives a monthly pension from the company.

退休后，他从公司领取每月养老金。

B2 verb /plaʊ/

plough

犁地

Meaning

to break up and turn over soil using a plough; to move through something with difficulty

Example

The farmer ploughs the field every spring.

农民每年春天都耕地。

B2 adjective /ˌprɛzɪˈdɛnʃəl/

presidential

总统的

Meaning

relating to a president or presidency

Example

The presidential election is scheduled for next month.

总统选举定于下个月举行。

B2 noun /ˈpæntri/

pantry

储藏室

Meaning

A small room or cupboard where food, dishes, and kitchen supplies are stored.

Example

She stocked the pantry with fresh groceries for the week.

她用新鲜的杂货为这周装满了储藏室。

B2 adjective /prəˈvɪʒənəl/

Provisional

临时

Meaning

arranged for the present; temporary; subject to later confirmation

Example

The provisional agreement will be reviewed next month.

临时协议将在下个月进行审查。

B2 adverb /ˈpʌb.lɪk.li/

Publicly

公开地; 公然地;

Meaning

in a public manner; openly; for everyone to see or know

Example

The company publicly announced their new policy.

公司公开宣布了他们的新政策。

B2 adjective /prɪˈzentəbl/

Presentable

适合公众展示; 看起来体面

Meaning

neat and suitable for being seen in public; acceptable in appearance

Example

Make sure you look presentable for the job interview.

确保在面试中看起来像个体面的人。

B2 adjective /prəˈfaʊnd/

profound

深远

Meaning

Very great or intense; having deep insight or understanding.

Example

The speech had a profound impact on the audience.

演讲对听众产生了深远的影响。

B2 noun /ˌpɛnɪˈtreɪʃən/

penetration

渗透

Meaning

The act of piercing or entering into something.

Example

The company's market penetration grew rapidly.

公司的市场渗透迅速增长。

B2 noun /ˈpjʊə.rɪ.ti/

Purity

纯净; 清洁; 无污染

Meaning

the state of being pure; cleanness or freedom from contamination

Example

The purity of the mountain water was remarkable.

山水的纯净令人赞叹。

B2 noun pəˈluː.tənts

pollutants

污染物

Meaning

A substance that pollutes or contaminates the environment.

Example

Pollutants contribute to environmental degradation.

污染物会导致环境退化。

B2 adjective /prɪˈpærəˌtɔːri/

Preparatory

预备的; 初步的; 用于准备的

Meaning

preliminary; introductory; intended as preparation

Example

She attended preparatory classes before the final exam.

她参加了考试前的预备课程。

B2 noun /ˈpæs.taɪm/

Pastime

消遣

Meaning

an activity done regularly for enjoyment; a hobby or recreational activity

Example

Reading books is her favorite pastime during weekends.

阅读书籍是她在周末的最爱消遣。

B2 noun /pərˈfek.ʃən/

Perfection

完美

Meaning

the state of being complete and without flaws; the highest degree of excellence

Example

The artist spent years trying to achieve perfection in his paintings.

艺术家花了多年时间，试图在他的画作中实现完美。

B2 noun /ˌpɪə.riˈɒd.ɪ.kəl/

periodical

期刊

Meaning

a magazine or journal published at regular intervals

Example

She subscribed to a science periodical.

她订阅了一个科学期刊。

B2 noun /ˈpɜː.tʃəs.ɪŋ ˈpaʊ.ɚ/

purchasing power

购买力

Meaning

The amount of goods and services that can be purchased with a unit of currency.

Example

Due to inflation, people's purchasing power has decreased.

由于通货膨胀，人们的购买力下降了。

B2 verb /pɪəs/

pierce

刺穿

Meaning

to make a hole through something; to penetrate with a sharp object

Example

The arrow will pierce through the target.

箭矢将穿透目标。

B2 noun/verb /pɜːrk/

perk

福利

Meaning

A benefit or advantage associated with a job; or to become more lively or cheerful.

Example

One of the perks of working here is free lunch every Friday.

在这里工作的一项福利是每周五免费午餐。

B2 verb /ˈpɒndər/

ponder

深思

Meaning

to think about something carefully

Example

She pondered over the meaning of the poem.

她沉思着诗歌的含义。

B2 noun ˈpɛs.tɪ.saɪdz

pesticides

杀虫剂

Meaning

Substances used for destroying insects or other organisms harmful to cultivated plants or to animals.

Example

Excessive pesticides use can harm the environment.

过度使用农药可能会对环境造成伤害。

B2 verb prəˈlɔŋd

prolonged

延长

Meaning

Extended in duration; made to last longer than usual.

Example

Modern medicine has prolonged life expectancy.

现代医学延长了预期寿命。

B2 noun /ˈpæʃ.ən/

Passion

热情

Meaning

strong enthusiasm or excitement for something; intense emotion or feeling

Example

Her passion for music led her to become a professional singer.

她对音乐的热情促使她成为一名职业歌手。

B2 adjective /ˈprɛsɪŋ/

pressing

紧急

Meaning

Requiring immediate attention or urgent action.

Example

The manager had to deal with several pressing issues at once.

经理必须同时处理几个紧急问题。

B2 noun prɒsˈpɛr.ɪ.ti

prosperity

繁荣

Meaning

The state of being prosperous; success or wealth.

Example

The country achieved great prosperity during the last decade.

这个国家在过去十年中取得了巨大的繁荣。

B2 noun ˌpʌŋkˈtʃʊəlɪti

punctuality

守时

Meaning

The quality of being on time; the habit of arriving or doing things at the agreed or proper time.

Example

Punctuality is a valued trait in professional settings.

守时是职业环境中一个受重视的品质。

B2 noun /ˈpoʊ.di.əm/

Podium

讲台

Meaning

a small platform on which a person may stand to be seen by an audience

Example

The winner stood on the podium to receive the gold medal.

获胜者站在讲台上领奖。

B2 adjective /ˈprɑːspərəs/

Prosperous

繁荣的; 兴旺的;

Meaning

successful in material terms; flourishing financially

Example

The company became very prosperous after launching their new product.

该公司在推出新产品后变得非常繁荣。

B2 adjective /ˈpraɪs.ləs/

Priceless

无价的；极其宝贵的

Meaning

extremely valuable; invaluable; beyond price

Example

Her grandmother's antique jewelry is absolutely priceless.

她祖母的古董珠宝是绝对无价的。

B2 noun, verb /ˈplɑːstər/

plaster

石膏，修补

Meaning

a soft mixture applied to walls or used to cover wounds; or to cover or coat with plaster

Example

The workers plastered the walls to make them smooth.

工人们将墙壁涂上石膏，使其平滑。

B2 noun /ˈpɪs.təl/

Pistol

手枪

Meaning

a small gun that can be held and fired with one hand

Example

The officer drew his pistol from the holster.

警察从枪套中拔出了手枪。

B2 adjective /ˈpʌz.lɪŋ/

Puzzling

令人困惑的

Meaning

confusing; perplexing;

Example

The scientist found the results puzzling.

科学家发现的结果令人困惑。

B2 adverb /ˈpjʊərli/

purely

纯粹地

Meaning

only and completely; entirely

Example

The decision was purely based on economic factors.

这个决定完全基于经济因素。

B2 adjective /prɪˈdɒmɪnənt/

predominant

占主导地位

Meaning

Having superior strength, influence, or authority; most common or noticeable.

Example

The predominant color in the painting is blue.

这幅画中的主要颜色是蓝色。

B2 verb /pruːn/

prune

修剪

Meaning

to cut off unwanted parts of a plant or tree to help it grow better

Example

Gardeners prune the trees in spring to encourage growth.

园丁在春天修剪树木以促进生长。

B2 adverb /prɪˈzjuːməbli/

presumably

可以推测

Meaning

used to convey that something is assumed to be true though not known for certain

Example

Presumably, he forgot to send the email.

可以推测，他忘记了发送邮件。

B2 noun /ˈpleɪsmənt/

placement

职位安排或分配

Meaning

the act of putting something or someone in a particular position or job

Example

The company arranged job placement for the graduates.

公司为毕业生安排了工作岗位。

B2 adjective /ˈpreɪz.wɜː.ði/

Praiseworthy

值得赞扬

Meaning

deserving praise; commendable; admirable

Example

Her charitable work is truly praiseworthy.

她的慈善工作确实值得赞扬。

B2 noun /ˈproʊtəkɔːl/

protocol

协议

Meaning

an official procedure or system of rules

Example

The security team followed strict protocol during the event.

安全团队在活动期间遵循了严格的协议。

B2 noun prəˈɡreʃ.ən

progression

进展

Meaning

The process of developing or moving gradually towards a more advanced state.

Example

Progression in technology drives innovation.

技术的进展推动了创新。

B2 noun /prəˈfɪʃənsi/

proficiency

熟练

Meaning

Competency or skill; expertise.

Example

His proficiency in multiple languages is remarkable.

他在多种语言上的熟练度令人印象深刻。

B2 adjective ˌpaɪəˈnɪə.rɪŋ

pioneering

开创

Meaning

Involving new ideas or methods; innovative and original.

Example

Pioneering efforts often lead to success.

开创性努力常常通向成功。

B2 adjective /ˈplɔː.zə.bəl/

plausible

似乎合理或可能

Meaning

Seeming reasonable or probable; credible or believable.

Example

His excuse seemed plausible, but I had my doubts.

他的借口看起来似乎有道理，但我心存疑虑。

B2 adjective /pəˈzes.ɪv/

Possessive

幸福

Meaning

showing a desire to own or control something; unwilling to share; jealously protective

Example

He is very possessive about his car.

当她收到奖项时，她无法掩饰自己的幸福。

B2 verb /pərˈsiːv/

perceive

感知

Meaning

to become aware of or understand something through the senses

Example

I perceive a change in his attitude.

我感知到他态度的变化。

B2 noun /ˈpɒp.i/

Poppy

罂粟

Meaning

a bright red flower with black seeds, often used as a symbol of remembrance

Example

The red poppy bloomed beautifully in the garden.

红色的罂粟花在花园里美丽地绽放。

B2 noun /pərˈsɪstəns/

persistence

坚持

Meaning

the quality of continuing steadily despite problems or difficulties

Example

His persistence finally paid off when he got the job.

他的坚持最终得到了回报，当他得到了那份工作。

B2 verb /plʌk/

pluck

摘取, 鼓起勇气

Meaning

to take hold of and quickly remove; to gather courage or determination

Example

She plucked a flower from the garden.

她从花园里摘了一朵花。

B2 noun /ˈpred.ə.ses.ər/

Predecessor

前任

Meaning

a person who held a job or office before the current holder; something that came before another thing

Example

The new manager learned from his predecessor's mistakes.

新经理从他的前任的错误中学习。

B2 noun /feɪz/

Phase

阶段; 变化或发展的过程中一个明确的阶段或时期

Meaning

a distinct period or stage in a process of change or development

Example

The project is now in its final phase.

该项目现在处于最后阶段。

B2 noun prɛsˈtiːʒ

prestige

声望

Meaning

Widespread respect and admiration felt for someone or something on the basis of a perception of their achievements or quality.

Example

The university has gained international prestige for its research.

这所大学因其研究而获得了国际声誉。

B2 noun prɪˈsɪʒ.ən

precision

精确度

Meaning

The quality of being exact and accurate.

Example

High precision instruments are used in surgery.

在手术中使用高精度仪器。

B2 noun /paʊtʃ/

pouch

袋子

Meaning

a small bag or pocket, often used to carry small items

Example

She kept her coins in a small leather pouch.

她把硬币放在一个小皮袋里。

B2 verb, noun, adjective /prɑːmpt/

prompt

促使 / 快速

Meaning

To cause someone to take action; done without delay.

Example

His speech prompted the audience to ask questions.

他的演讲促使观众提问。

B2 adjective /ˈpleɪfəl/

playful

顽皮的, 活泼的

Meaning

full of fun and high spirits; lively

Example

The puppy was very playful, running around the garden.

小狗很顽皮，在花园里跑来跑去。

B2 noun /ˈplæn.tɪn/

Plantain

大蕉

Meaning

a large green banana-like fruit that is usually cooked before eating

Example

Plantain can be fried, boiled, or baked and is a staple food in many tropical countries.

大蕉可以油炸、煮沸或烘烤，是许多热带国家的主食。

B2 verb /prɪˈzjuːm/

presume

假设

Meaning

To suppose something is true without proof; to take for granted.

Example

I presume she has already left for the meeting.

我假设她已经去参加会议了。

B2 noun ˈpɛstɪˌsaɪd

pesticide

杀虫剂

Meaning

A substance used for destroying insects or other organisms harmful to cultivated plants or to animals.

Example

The pesticide sprayed in the field killed the harmful insects.

在田间喷洒的杀虫剂杀死了有害的昆虫。

B2 verb /poʊz/

pose

幸福

Meaning

To assume a particular position, especially for a photograph or display; to present a problem or question.

Example

She posed for a picture in front of the monument.

她在收到奖项时，无法隐藏她的幸福。

B2 verb /prɪˈskrʌɪb/

prescribe

开药

Meaning

to recommend or authorize the use of something, especially medicine

Example

The doctor prescribed medication for my cold.

医生给我开了药治我的感冒。

B2 verb /prɪˈsiːdɪd/

preceded

之前发生

Meaning

came before something in time, order, or position

Example

Dark clouds preceded the heavy rainfall.

乌云在暴雨之前出现。

B2 adjective /ˈpæsɪv/

passive

被动; (语法) 被动语态

Meaning

not actively responding or participating; in grammar, denoting the voice in which the subject undergoes the action

Example

Instead of taking charge, he remained passive during the meeting.

他在会议中没有采取主导，而是保持被动。

B2 noun /ˈprɪv.ə.lɪdʒ/

Privilege

特权

Meaning

a special right or advantage that only one person or group has

Example

It's a privilege to work with such talented people.

与如此有才华的人一起工作是一种特权。

B2 noun /ˈpiː.lər/

Peeler

削皮器

Meaning

a kitchen tool used to remove the outer skin or peel from fruits and vegetables

Example

Use a peeler to remove the potato skin.

使用削皮器去除土豆皮。

B2 noun /ˌproʊɪˈbɪʃən/

prohibition

禁止

Meaning

The act of forbidding something by law or authority.

Example

The government announced the prohibition of smoking in public places.

政府宣布在公共场所禁烟。

B2 verb /pəˈtroʊl/

patrol

巡逻

Meaning

to move around an area to watch or guard it

Example

The police patrol the streets at night to ensure safety.

警察晚上巡逻街道以确保安全。

B2 noun /ˈpaɪpˌlaɪn/

pipeline

管道

Meaning

a long tube through which liquids or gases are transported

Example

The company is building a new pipeline to transport natural gas.

该公司正在建造一条新的管道来运输天然气。

B2 noun /ˈpɪt.ʃər/

Pitcher

水壶, 大壶

Meaning

a large container with a handle and spout used for storing and pouring liquids

Example

The water pitcher on the table was filled with ice-cold lemonade.

桌子上的水壶里装满了冰冷的柠檬水。

B2 verb /ˈpɛrɪʃ/

perish

死去

Meaning

To die, especially in a sudden or violent way.

Example

Many soldiers perished in the war.

许多士兵在战争中死去。

B2 verb /ˈprɒsɪkjuːt/

prosecute

起诉

Meaning

to institute legal proceedings against someone

Example

The lawyer decided to prosecute the case after gathering sufficient evidence.

律师在收集到足够证据后决定起诉此案。

B2 noun /ˌprɒsɪˈkjuːʃən/

prosecution

起诉

Meaning

The act of bringing a criminal charge against someone and pursuing legal action in court.

Example

The prosecution presented strong evidence against the defendant.

起诉方提出了有力的证据反对被告。

B2 noun /ˈpraɪ.vət ˈtuː.tər/

Private tutor

私人导师

Meaning

a teacher who gives individual instruction to a student outside of regular school

Example

The private tutor helped the student improve his math skills.

私人导师帮助学生提高了他的数学技能。

B2 verb prəˈlɒŋ

prolong

延长

Meaning

To extend the duration of something; to make something last longer.

Example

A healthy diet helps prolong life expectancy.

健康饮食有助于延长预期寿命。

B2 noun ˈpærəˌlɛlz

parallels

相似之处

Meaning

Similarities or comparisons between two different things or situations

Example

There are parallels between Japan's aging issues and Bangladesh's situation.

日本的老龄化问题和孟加拉国的情况之间存在相似之处。

Meaning

to continue firmly in an action or opinion despite difficulty or opposition

Example

She decided to persist in her efforts to learn French.

支柱

Meaning

a strong vertical support or mainstay of a structure or system

Example

The ancient temple was supported by massive stone pillars.

古老的庙宇由巨大的石柱支撑。