Peridontal tissue
[医] 牙周组织
🧩 词语组成解析
[医] 牙周的, 牙周膜的
🗣️ 情景例句
a portrait of the United States--
一幅美国的剪影--
I'll call the roll before class.
课前我要点名。
Yes. I wouldn't go home early if I were you.
是的，如果我是你，我不会早回家。