Anticalculous
[医] 抗石的, 防牙垢的
🗣️ 情景例句
The way to learn a language is to practice speaking it as often as possible.
学习一门语言的方法就是要尽量多地操练说出它来。
I always used to leave for work at 8:30.
我过去总是在8:30离开去工作。
'I might as well have them,' I said sadly.
“我还是买下的好，”我垂头丧气地说。