别像个傻瓜一样在公共场合大声唱歌！
Stop acting like a ___buffoon by singing loudly in public!
那群小丑在派对上扮演滑稽角色逗大家发笑。
The ___buffoons at the party acted out ridiculous roles to make everyone laugh.
他在会议上像个小丑一样打断了所有人的发言。
He acted like a ___buffoon by interrupting everyone's speech at the meeting.
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