foul one's own nest
家丑外扬
A:The woman was beaten again.Why didn't she call the police?
A:那个女人又挨打了，她为什么不报警呢?
B:Because it was her hushand who beat her.
B：因为是她丈夫打的她。
A:It's incredible.
A：真是让人不可思议。
B:She said that she didn't want to foul her own nest.
B：她说她不想家丑外扬。