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
Where are you from?
你是从哪儿来的？
Judge not of men and things at first sight.
审人论事宜谨慎，一见之下莫断定。
he could no get his arm out.
他的胳膊反倒退不出来了。