Sliding flap
[醫] 滑動瓣
?? 詞語組成解析
a. 滑行的, 變化的\\n[機] 滑動
flap
[fl?p]
n. 扁平物;[航] 襟翼;拍打，拍打聲;〈口〉不安，恐慌;
v. 上下或左右移動、擺動;輕拍;振翅而飛;
??? 情景例句
I graduated from Nanjing University.
我從南京大學畢業的。
An empty bag cannot stand upright.
空袋不能直立。
Yes, thank you. We enjoyed ourselves very much.
挺好，謝謝你。我們玩得非常愉快。