Osteogen
成骨质
🗣️ 情景例句
Do you have any brothers or sisters?
你有兄弟姐妹吗？
Banking is such a boring business; I believe I'll take a short snooze.
警卫银行是桩枯燥的差事，且打个盹吧。
How are you today?
你今天好吗？