n.救助者；節(jié)約器；儲(chǔ)蓄者
Now the damper became a must, a life saver! 現(xiàn)在制音器變成必需設(shè)備,救助器!
A washing-machine is a saver of time and strength. 洗衣機(jī)是一種省時(shí)省力的機(jī)械。
n.救命者；水難救生員；救生工具
n.節(jié)省時(shí)間的事物
