noun🔗Share救生衣，漂浮背心。 An article of protective clothing that is designed to keep the wearer's head floating above the surface of the water."The boat trip required everyone to wear lifejackets for safety. "为了安全起见，乘船游览要求每个人都穿上救生衣。nauticalsailingaidweardeviceChat with AIVocabulary GamePractice Reading
