也可以说"watch out"。支持范例1. Look out! There's a car coming! 小心!有辆车来了!2. Look out! You could fall off the edge here. 当心!你别从边上掉下去。3. Look out, Harry, that step's not safe! 当心,哈利,那个台阶不安全!会话记忆A: Look out! A small bo...