Jackmanizing
深度渗碳; 深渗碳处理
🗣️ 情景例句
Good morning, Mr. Zhou. Take a seat, please. What can I do for you?
早上好，周先生。请坐。有什么事吗？
He that talks much erre much.
言多必失。
He came out of the library, a large book under his arm.
他夹着本厚书，走出了图书馆。