acts
n.
行为( act的名词复数 );
动作;
（一）幕;
（搭档）演出短节目的演员;
v.
行动( act的第三人称单数 );
做;
表演;
起作用;
例句:
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The plant acts as a sedative in treating neuralgia.
这种植物被用作治疗神经痛时的镇静药。
来自柯林斯例句
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Ecstasy acts as a stimulant and increases brain activity.
来自BBC
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He can perform an astonishing variety of acts, including mime and juggling.
他能表演好几种令人惊叹的把戏，包括哑剧和玩杂耍。
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Barlow acts as the lead singer and primary songwriter.
来自BBC
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We strongly condemn these acts of censorship and harassment.
来自BBC
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Sean's a fast thinker, and he acts on impulse.
肖恩是个思维敏捷、行事随兴的人。