Ostein
n. [生化]骨胶原
🔁 扩展释义
【医】 骨胶原
🗣️ 情景例句
There are several tours of the Grand Canyon.
到大峡谷有好几个旅游团。
Maybe some other time.
也许下一次吧。
Some of them were as big as marbles.
有的钻石像玻璃球那么大。