Welsbach
burner韦耳斯拔煤气喷嘴
🗣️ 情景例句
I'm unemployed at the moment.
现在我失业了。
Without a friend,the world is wilderness.
没有朋友，世界成了荒野。
It's much cheaper to camp than to stay in a hotel.
露营比住旅馆要便宜多了。