常見例句雙語例句A valve that was supposed to be open, to allow the heat and steam to escape, was closed.一個本應打開的閥門被關上了，這個閥門控制著熱量和蒸汽的瀉出。The engineer opened the safety valve to allow the steam to escape and so reduce the pressure.手輪、手柄和扳手傳動以及安全閥、減壓閥、疏水閥省略本代號。 返回 steam escape valve