Cavities
n. 腔, 洞( cavity的名词复数 ); （龋齿的）洞
✅ 同义词
🗣️ 情景例句
together in a more scheduled way.
能更定时在一起。
He who follows two hares is sure to catch neither.
追逐两只兔，两头都落空。
Jim, how long have you been at this school?
吉姆，你到这学校有多么时间了？