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.)
to delay dealing with something until later
to cooperate with members of the opposing political party
A person’s actions or behavior make them worse than an enemy...
to be completely focused or revolve around something
to maintain a clear sense of direction or goal
to change direction or strategy quickly
