Osteogen
成骨质
🗣️ 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。
How about Mary? How long has she lived there?
玛丽怎么样？她在那儿住多久了？
That's fair.
那样公平。