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238页（198字）
比喻难以逃脱，例警方已布下天罗地网，任歹徒有多大本领，也插翅难飞。
With all their ingenuity，the ruffians could think of no way of escaping from the dragnet spread out by the police．