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
I'm calling to ask you some questions about Susan.
我打电话是想问一些关于苏珊的事。
A man may smile and smile and be villain.
笑里藏奸。
She is a strong swimmer and many people feel that she is sure to succeed.
她是一个游泳能手，很多人认为她一定能成功。