Osteodentin
[医] 骨性牙质
🗣️ 情景例句
I would like to lodge a complaint.
我有些怨言。
How many cups are you going to order?
你要订几杯？
Even if you travel in ideal weather, sea journeys take a long time.
即使风平浪静，坐船旅行也要占用很长时间。