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
I'm very proud of you.
我为你感到非常骄傲。
My thesis is due the same week as midterms.
毕业论文截止的日期，和期中考试那一周重复。
He strolls about the town.
他在镇上四处遛达。