Osteon
n. [医]骨单位(密质骨构造的基本单位)
🗣️ 情景例句
Bring a blanket and my medical bag.
拿一条毯子和我的医疗箱来。
It is as well to know which way the wind blows.
识时务者为俊杰。
Are you crazy?
你疯了吗？