Osteon
n. [医]骨单位(密质骨构造的基本单位)
🗣️ 情景例句
Now that illiteracy is not so wide spread, people everywhere are free to enjoy great literature.
现在文盲不是很普遍，世界各地的人都可以很自由地欣赏文学作品。
I understand him to be a distant relation.
我听说他是我的一个远房亲威。
'I'm hanging this picture on the wall,' I answered.
我正将图片挂到墙上去呢，我回答