Ulvite
方钛铁矿
🗣️ 情景例句
My father is an engineer of a construction company, and mother is a doctor.
我父亲是一家建筑公司的工程师，母亲是一名医生。
Learning is better than house and land.
学问是一生的财富。
The salvage operation had been a complete failure.
打捞工作彻底失败了。