Periodontic
[醫] 牙周的, 牙周膜的
? 同義詞
??? 情景例句
Today is the perfect example.
今天就是一個很好的例子。
What's the population of China?
中國有多少人口？
I really think a little exercise would do you good.
我真的覺得做點運動對你有好處。