life·boat /ˈlaɪfbəʊt $ -boʊt/ noun [countableC] 1 TTWa boat that is sent out to help people who are in danger at sea (海上)救生艇[船]lifeboat crew/station/service 救生船全体船员/停泊港/服务
2. TTWa small boat carried by ships in order to save people if the ship sinks 〔船上备用的〕救生艇