Parodontitis
牙周炎
🗣️ 情景例句
After studying an hour, I finally got the hang of the lesson.
我学习了一个小时，终于理解了这一课的要点。
A thousand words will not leave so deep an impression as one deed.
千言万语不如一个行动。
Let's see if we can work it out to your satisfaction.
我来看看是否有什么办法能让你满意。