to do something for a purpose
Doctors must act fast in emergencies.
医生必须在紧急情况下迅速行动。
to behave in a certain way
You should act kindly to others.
你应该友善待人。
to perform in a play or movie
She loves to act in school plays.
她喜欢在学校戏剧中表演。
to pretend to be someone
He tried to act brave when he was scared.
他害怕时试图假装勇敢。
to serve a role or function
The teacher will act as a guide for the trip.
老师将担任这次旅行的向导。
to have an effect
The medicine will act quickly to reduce pain.
这种药会快速起效来减轻疼痛。
something that someone does
Helping others is a kind act.
帮助他人是一种善行。
a law made by government
The new act protects wildlife.
新法案保护野生动物。
fake behavior to impress others
His happy mood was just an act.
他开心的情绪只是装出来的。
a section of a play or show
The first act of the play was exciting.
这出戏的第一幕很精彩。
a performance in a show
The magic act amazed the audience.
魔术表演让观众惊叹不已。
a performer or music group
They are my favorite music act.
他们是我最喜欢的音乐组合。