Carburize
[建] 渗碳
🗣️ 情景例句
Practice tenses as much as possible.
操练各种时态。
He is not interested in money matters.
他对金钱问题不感兴趣。
We have just moved into a new house and I have been working hard all morning.
我们刚刚搬进一所新房子，我辛辛苦苦地干了整整一个上午。