Altierfen
(铁表面的)渗铝法
🗣️ 情景例句
I remember when I was pregnant with Richard.
我记得当我怀着Richard时，
We have mainly adopted some usual international practices.
我们主要采取了一些国际上的惯例做法。
When did they live there?
他们什么时候住在那儿？