泄气: 1.(泄劲) lose heart; feel discouraged; be disheartened 短语和例子没有因为困难而泄气 not discouraged by difficulties; 别泄气! don't lose heart! 他对自己的事业感到泄气。 he was discouraged in [over] his enterprise. 他的毛病是很
泄气阀: air bleed valveair escape valveair release valveatmospheric relief valvebav bleed air valvegas bleed valvesnifting valvesnuffle valve