Osteon
n. [医]骨单位(密质骨构造的基本单位)
🗣️ 情景例句
The village was filled with people--the weather was so nice.
镇上挤满了人--因为天气好的缘故。
I'm pleased to hear about your wife having a baby.
我很荣幸得知你太太生了一个小宝宝。
It's to the north of England; it's part of Britain.
它位于苏格兰的北部，是不列颠的一部分。