Odontolithiasis
[医] 牙垢症
🗣️ 情景例句
I love tuna fish.
我喜欢吃鲔鱼。
After forty years teaching English he thinks it's time to call it a day.
他教英语四十年，认为该退休了。
We have some cheaper ones.
我们有便宜一点的。