Parodontium
牙周膜
??? 情景例句
What does your father do?
你父親從事什么職業？
Work harder.
再接再歷。
The last lap! Wu Peng from Class 1 and Lin Tao from Class 3 were still neck and neck.
最后一圈！1班的吳鵬和3班的林濤仍然是并駕齊驅。