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're right. We've earned it.
你说得对，我们有这样做的权利。
A leader should not dictate to his followers.
领导者并不是向部下下达命令便了事的。
OK. Thanks.
谢谢！