Lapis dentalis
[医] 牙垢, 牙石
🧩 词语组成解析
[医] 石
🗣️ 情景例句
Small world. I'm from Titusville, too.
世界真小。我也是从Titusville来的。
Excuse me, how can I get to the bus station?
对不起，汽车站怎么走？
Don't worry about that. Right now you need to stay still until help comes.
别为这事担心。现在，在有人来之前，你必须要呆着不动。