Osteon
n. [医]骨单位(密质骨构造的基本单位)
🗣️ 情景例句
How much notice of cancellation is necessary to get my deposit back?
想把定金拿回来，要提前多长时间通知你才行？
I think a joint venture would be beneficial to us both.
我认为合资经营对双方都是有利的。
no more than one or twofeet thick.
气垫只有一两英尺厚。