Ferritization
褐铁矿化
🗣️ 情景例句
Good afternoon, Mrs. Green. I'd like you to meet my girlfriend, Sally.
格林太太，下午好。我想让你认识一下我的女朋友萨里。
How long have you been studying English?
你学了多长时间的英语了？
All right.
好的。