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 love it when people come over to visit.
我喜欢别人来造访。
We'll have to check these rates against those charged by other suppliers.
我们必须核查一下由其他供应商提供的费率。
'My key,' I shouted.
“钥匙！”我喊道。