Peridentium
牙周组织
🗣️ 情景例句
As soon as he left his table.
他刚离开桌子。
Bad habits are easily formed.
坏习惯容易养成。
It could only get over the mountains if it rose to 10,000 feet.
只有在飞至10，000英尺的高度时，它才能飞过这些山头。