难言兰臭

难言之隐 nányánzhīyǐn[be hard to state what ails one in the mird;painful topic;sth hard to speak out] 隐藏在内心深处难以说出口的事。

⒈  难言：谈不上；兰：兰花；臭：味；兰臭：指气味相投的友谊。指很难结下友情。