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
Oh, it was nothing. I'm glad she liked it.
嗯，小意思。她喜欢就好。
All men cannot be first.
不可能人人都得第一名。
You'd better stay in bed till tomorrow. If you're not better by then, I'll take you to see the doctor.
你最好是在床上躺着，一直到明天。如果还不好，我再带你去看医生。