He acts like he knows everything.
他表现得好像他什么都知道。
The actor acts convincingly in the play.
演员在戏剧中的表演令人信服。
The committee will act on the proposal next week.
委员会将在下周对该提案采取行动。
The government acts to control inflation.
政府采取行动控制通货膨胀。
The medicine acts quickly to relieve pain.
药物迅速起效，缓解疼痛。
The virus acts on the respiratory system.
病毒作用于呼吸系统。
The enzyme acts as a catalyst in the reaction.
酶在反应中充当催化剂。
His kindness acts as a magnet to others.
他的善良对他人具有吸引力。
The law acts as a deterrent to crime.
法律对犯罪起到威慑作用。
The government acts in the best interests of the people.
政府以人民的最佳利益为行动准则。