(单词翻译:单击)
攻其不备Take one off his guard.To catch a weasel asleep. eg：The sudden attack took the enemy napping and ran. 中英俚语俗语来源：孙子·计篇："攻其不备，出其不意。" 同义词：乘虚而入 Swoop down upon.反义词：鸣鼓而攻之 Beat a charge.
