Weld toxic gases
[化] 焊接有害气体
🧩 词语组成解析
weld
[wɛld]
vt.& vi. 焊接;使紧密结合;
n. 焊接点;黄色植物染料;
n. 气体
🗣️ 情景例句
What's the nature of the problem?
是什么样的问题？
I'll need an economy ticket with an open return.
我要一张经济舱，回来时间不定的来回票。
It is now being sent to his home by train.
现在正用火车给他运回家来。