to improve one’s skill or knowledge
提高某人的技能或知识 (tígāo nǐ yǐjīng xuéguò de zhīshì huò jìnéng)
"She decided to brush up on her painting techniques."
"她决定提高她的绘画技巧。" (Zài dà huìyì zhīqián, wǒ xūyào **brush up on** wǒ de yǎnjiǎng jìqiǎo.)
to take revenge or resolve a conflict from the past
to contact several people or places by phone
you can’t achieve anything if you don’t take risks
to make a rough plan or outline of something
to work hard and focus on something
to increase into a large amount
