Osteon
n. [医]骨单位(密质骨构造的基本单位)
🗣️ 情景例句
Will you help me?
可以帮助我吗？
You can't always get what you want.
天不从人愿。
No, they're still working on it.Let's go into the garage and have a look at it.
没有，他们还在修呢。我们到车库去看一下吧。