Sigmoid valves
[医] 半月瓣
🧩 词语组成解析
a. S字形的, 乙状结肠的, C字形的\\nn. 乙状结肠
n. 阀门；真空管；瓣膜（valve的复数）
🗣️ 情景例句
You need to pay more attention to it.
你需要更加留心。
If he doesn't, will you wash the dishes.
如果他不，你会洗碟子吗？
5 What makes you feel that you are doing well?
5。是什么使你感到自己干得不错？