Annulus
n. 环, 环形物, 体环\\n[化] 环形缝; 环隙
🏥 医学释义
环形物，环形套管
🗣️ 情景例句
With the development of urban construction in recene years, more and more skyscrapers have been set up unceasingly.
随着近年来城市建设的发展，越来越多的摩天大楼不断建起。
How long will you remain out?
你将会在外面逗留多久？
Let's move that bag, or there may be an accident. said Li Lei.
“我们搬走那包米，要不会出交通事故的”，李垒说。