Osteon
n. [医]骨单位(密质骨构造的基本单位)
🗣️ 情景例句
Yes, here are some catalogs and brochures.
有的，这里是一些目录和小册子。
His wife died a year ago. Now he lives alone.
他妻子去年去世了。现在他一个人住。
I think we're lost! What shall we do?
“我想我们迷路了！我们该怎么办呢？”