Jackmanizing
深度渗碳; 深渗碳处理
🗣️ 情景例句
Yes. That would be much better.
行，那样也好。
I heard the clock, but I didn't get up until 9.
我听见闹钟了，但我捱到九点才起。
IS it true or false?
这是对的还是错的？