Parodontal
a. 牙齿周围的, 齿根膜的
🗣️ 情景例句
I don't believe it!
我简直难以相信！
I heard such a funny story this morning.
今天早上我听到一件十分有趣的事。
I'm calling to see if you would like to have lunch tomorrow.
我打电话给你，是想知道明天一起吃顿中饭怎样？