Cemental decay
[医] 牙骨质腐蚀
🧩 词语组成解析
a. 白垩质的
🗣️ 情景例句
the other night when I was trying on my new clothes.
也就是我试新衣服的那天晚上。
Overdone is worse than undone.
过犹不及。
The best time to come to China is in spring or autumn.
到中国来，最好的时间是在春天或者秋天。