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
That sounds a good idea. Thank you.
好主意！谢谢你。
A good name is earlier lost than won.
失去美名易，得到美名难。
Are we going there by bus?
我们要乘公共汽车去吗？