Ferrotron
有胶合剂的羰基铁
🗣️ 情景例句
to read to the students--their own children, really.
共同为学生们， 其实就是他们自己的孩子， 朗读
Prevention is better than cure.
预防胜于治疗。
Look out! There is a car coming.
小心，车来了。