Oxyferrite
铁氧体(氧与α-铁的固溶体)
🗣️ 情景例句
A son and his wife and their three children--my grandchildren.
有个儿子， 还有儿媳妇以及他们的三个孩子，我的孙儿女们。
We've gone over quite a lot. Shall we take a break?
我们已进行很久了，让我们休息一下好吗？
She has been to school.
她上学去了。