He always smiled as though there were something lewd about the secret to the outsider, but that it was something that we understood . 他总是笑眯眯的，似乎对外人来说，这秘密是桩不可告人的丑事，但是我们却心照不宣。
There was no ulterior motive in his proposal 他的建议里没有不可告人的动机。
I know some shady transactions took place in general affairs 我知道总务处有不可告人的交易
Everyone has a little dirty laundr 每个人都有点不可告人的小秘密。
I don ’ t have skeleton in my closet 我没有什么不可告人的秘密
Skeleton in one " s closet 壁橱里的骷髅不可告人的事
Skeleton in one ' s closet 壁橱里的骷髅不可告人的事
Uh , since when can you tell mr . bristow something you can ' t tell me 看来你跟布里斯托先生有些不可告人的事情？
