出处：按学科分类—语言、文字 中国对外翻译出版公司《汉英成语词典》第225页（282字）
自己做好充分准备，给疲乏的对方以迎头痛击；亦用以比喻做事从容沉着而不慌乱，例在战争中，我军常常是以逸待劳，以少胜多，把远来的敌人打得溃不成军。
When fighting a large force on the move，small numbers of us would lie in wait for thc oncoming enemy who were tired from the long trek and then finish them off．