very intelligent or quick-thinking
非常聪明或思维敏捷 (fēicháng cōngmíng huò fǎnyìng xùnsù)
"She's sharp as a tack and always has the best answers in class."
"她非常聪明,总是能给出课堂上最好的答案。" (Tā fēicháng cōngmíng, zǒng shì zài kètáng shàng gěi chū zuì hǎo de dá'àn.)
someone who enjoys being with and talking to other people
to be in a very dangerous or uncertain situation
to accept a difficult situation patiently
to have the opposite result of what was intended
to sit down and relax, especially after working hard
to achieve the highest position or level in something