Dentinum
[医] 牙[本]质
🗣️ 情景例句
I'm leaving for Beijing on a four-day tour.
我马上要去北京旅游4天。
Do you have a valid license?
你持有效驾驶执照吗？
The police were called in, but they could not arrest anyone,
警察被召来了，但他们却不能逮捕任何人，