Periodontitis complex
[医] 复杂性牙周炎
🧩 词语组成解析
[医] 牙周炎
🗣️ 情景例句
When you go to a new school it takes a while to know the ropes.
到一所学校读书要花一段时间熟悉情况。
Yes, and I took many pictures.
是的，我还照了好多照片。
Let us suppose that you are preparing a meal and keeping an eye on the baby at the same time.
假设你在做饭，同时又在照看孩子。