make-up gas的用法和樣例：
例句
- If you are unfamiliar with the hazards associated with a particular gas, contact your supplier for additional information.
如果你對與特定氣體相聯(lián)系的危險不熟悉，請與你的供應商聯(lián)系，以得到補充資料。 - The foul gas being siphoned from the roof, into the air from coming in to add that filtered fresh air.
污濁的氣體從天窗被抽走后，從進(jìn)風(fēng)口補充進(jìn)來(lái)的是經(jīng)過(guò)過(guò)濾的新鮮空氣。
