Jackmanizing
深度渗碳; 深渗碳处理
🗣️ 情景例句
Excuse me. Is this seat taken?
对不起 ，请问这个座位有人吗？
You had better not bother him right now.
你现在最好不要去打扰他。
No, I think it'll be all right for him to go to school.
不，我想他去上学没什么关系。