Carburizing
[机] 渗碳
🗣️ 情景例句
Fitness clubs are becoming more popular these days.
现在健身房越来越流行了。
Can I get a seat for today's 7:00 a.m. train?
我可以买到今天上午7点的火车座位吗？
No, they aren't. They're on the floor.
不，不在。它们在地上。