Welsbach
burner韦耳斯拔煤气喷嘴
🗣️ 情景例句
We need a stable political environment in which to develop our economy.
我们需要一个稳定政治环境来发展经济。
I would like to talk to Mr. Liu.
我想请刘先生来听电话。
My wife was delighted that things had returned to normal once more.
一切又都恢复了正常，为此我妻子十分高兴。