Stratum adamantinum
[医] 釉层, 釉质
🧩 词语组成解析
🗣️ 情景例句
OK. There will be a taxi waiting outside in 10 minutes.
好，10分钟后会有一部出租车在外面等候。
Repetition is the mother of knowledge.
反覆学习是知识之源。
Why does aperson standing in a bus or train tend to fall when a sudden start is made?
一个人站在公共汽车或火车上，当车突然开动时，他为什么会倾倒呢？