Osteon
n. [医]骨单位(密质骨构造的基本单位)
🗣️ 情景例句
I think something he can use is the best. A watch or something.
最好是实用的，像手表啦或什么的。
The restaurant is downstairs.
那餐厅在楼下。
It was one of the biggest buildings of all time and a lot of people from many countries came to see it.
它是有史以来最高大的建筑物之一，因此，人们从各个国家纷纷前来参观。