不可告人的秘密
a skeleton in the closet
(1) skeleton “骨骼，骷髅”
(2) closet “壁橱，橱柜”
(3) a skeleton in the closet字面意思“壁橱里的骷髅”，引申义为“不可告人的秘密，丑事，黑历史”
英语解释为an embarrassing or unpleasant secret about something that happened to you in the past。
例
Ben didn’t believe her when she said that she didn’t have any skeletons in the closet.
本不相信她说的她没有什么不可告人的秘密。
Size eight Ha! She always told me she was a size six. We found the skeleton in her closet.
八号的她一直说她穿六号，她的小秘密曝光了。《绝望的主妇》
不可告人的秘密
dirty laundry
1
dirty laundry表示“脏衣服”，引申义为“不可告人的秘密，丑事”
英语解释为one’s very private, personal matters, especially that which may be embarrassing。
例
Everyone has a little dirty laundry.
每个人都有不可告人的秘密。
I don’t want to hear about her dirty laundry.
我不想听她的丑事。
2
wash/air one’s dirty laundry/linen “把丑事外扬，把丑事公开”
英语解释为to discuss very private, personal matters, especially that which may be embarrassing or bad, in public or with other people。
例
I don’t see why he must wash his dirty laundry in public.
我不明白他为什么一定要公开他的家丑。
Don’t wash your dirty linen in public.
家丑不可外扬。
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