burst bubble

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释义
让某人幻想破灭（burst someone's bubble）
to destroy someone's illusion or delusion; to destroy someone's fantasy.

例句
Man:I don't mean to burst your bubble, but your friend's in a lot of trouble.(2 Broke Girls)
某男：我不想让你们幻想破灭，但是你们的朋友真的麻烦了。（破产姐妹）