Metacolizing
铸铁表面渗铝法
🗣️ 情景例句
If you know a man's last name, address him as 'Mr.'.
如果你知道一个男性的姓， 应该用 'Mr。' 来称呼他。
This is Lesson One.
这是第一课。
I'll have to try that.
我得试试这么做。