短语词组短语life -belt shelp 救生圈架circular life -belt 救生带cork life -belt 救生衣fire service life safety belt 消防安全腰带inflatable life belt 气胀救生带rubber life belt 橡皮圈Life utility just belt 救生带BELT LIFE 传送带寿命;传动带寿命 返回 life belt