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
What would you like to read to them?
你想读些什么给他们听？
She is the boss in the house.
她是一家之主。
The flames threw light onto the ceiling of the cave.
火焰照亮了山洞的顶部。