Cariogenicity
生龋性
🗣️ 情景例句
I haven't had a minute to relax all day.
我今天连一分钟都没休息。
So far I have been learning about China.
到止前我止，我一直都在研究中国的事情。
It is important for us to express our opinions.
对我们来说，表达我们的意愿很重要。