Endodontics
n. [医]牙髓学
🗣️ 情景例句
Harvey, how are you?
你好吗，Harvey？
These clothes are dirty, they need to be washed.
这些衣服脏了，需要去洗。
It is hard for us to realize nowadays how difficult it was for the pioneers.
我们今天很难想像昔日的登山先驱们是多么艰苦。