Cementodentinary
[医] 牙骨牙质的
🗣️ 情景例句
If you're under twenty-one years of age ...
如果你还不到二十一岁……
No matter what she says, don't get angry.
不论她说什么，你也不要生气。
He can get up for about two hours each day, but you must keep the room warm.
他每天可以起来两个小时，但您必须保持房间温暖。