Osteon
n. [医]骨单位(密质骨构造的基本单位)
🗣️ 情景例句
You really must try and take more care.
你一定要更当心一点。
He gave her his word that he would never be late again.
他向她保证，绝不再迟到。
I'd like to look at some sweaters.
我想看看毛衣。