Caval fold
[医] (下)腔静脉褶(胚胎)
🧩 词语组成解析
[医] 腔静脉的
fold
[fold]
vt. 折叠;合拢;抱住;笼罩;
vi. 折叠起来;彻底失败;
n. 折痕;信徒;羊栏;（起伏地的）凹处，洼;
🗣️ 情景例句
There's a lot in what you say, but we have more urgent problems to deal with.
你说的相当有道理，不过我们有更紧要的事情要办。
What time does the first train to Boston leave?
第一班去波士顿的列车什么时间开出呢？
A short while ago, my sister helped me to carry one of my old bookcases up the stairs.
几分钟前，我妹妹帮我把一个旧书橱抬上了楼。