描述：
II．American Slang ◆hang by a thread 什么悬了 E.g.(1)Your job is hanging by a thread right now .I think your boss wants to fire you . (2)Peace is hanging by a thread in Iraq . III. Classic Movie Clips ◆shake up 震撼 E.g.I’m such a great speaker .My speeches always shake up the audience . ◆for a change 什么腻了,换个样 E.g.We always go to the movies on Friday night .Let’s go dancing for a change .
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