秘密行动的英语怎么说

秘密行动

翻译如下：

stealth; underplay; Secret action.都可以

例句：

But when it came to my brother, they do not seem to know or care that their cause of secret action ruffled a kind of devastation that could cut them.

但当说到我哥哥，他们似乎不知道或者不关心，他们的秘密行动会引发一场令他们痛不欲生的灾难。