Circular flap
[医] 环形瓣
🧩 词语组成解析
flap
[flæp]
n. 扁平物;[航] 襟翼;拍打，拍打声;〈口〉不安，恐慌;
v. 上下或左右移动、摆动;轻拍;振翅而飞;
🗣️ 情景例句
He is working on a book about the Vietnam War.
他正在写一本关于越战的书。
What did you do the week before last?
上上星期你干了什么？
But this is not a business that can be undertaken in a day or swiftly improvised by a mere command of the will.
但这并非一日之功，也不是单凭意志一蹴而就的事。