劍橋詞典 life-saver noun [C] (HELP) someone or something that gives you a lot of help when you are in a very difficult situation 救命之人；救星；救命之物 When you're stuck in traffic , a mobile phone's an absolute life-saver. 儅你遇到交通堵塞的時(shí)候，手機(jī)真成了救星。 life-saver noun [C] (WATER) Australian English a person on a beach or at a swimming pool whose job is to make certain that the swimmers are safe and save them if they are in danger 救生員 比較lifeguard 返回 life-saver