Durapatite
多晶型磷灰石
🗣️ 情景例句
We haven't had any complaint of this kind. Is there any evidence.
我们还从未听过这样的抱怨。有什么证据呢？
She is now on vacation.
她正在休假。
Jim and Li Lei meet on the road outside Li Lei's house.)
（吉姆和李垒在李垒家外面的路上相遇。）