Pericementitis
[医] 牙周膜炎
🗣️ 情景例句
She is sleeping here so she won't have to travel from Riverdale in the morning.
她晚上住在这儿，免得早上从Riverdale赶过来。
He falls down the stairs.
他从楼梯摔了下来。
I would like to ask you about some stamps.
我想问问有关一些邮票的事。