under the cloak of

1. 在……掩护下

They did it under the cloak of darkness.

他们是趁着黑夜干的。


习惯用语Have not thy cloak to make when it begins to rain.1.[谚]不要等到下雨再做雨衣; 未雨绸缪。under the cloak of1.披着...的外衣, 以...为借口或幌子; 在...的覆盖下