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 know.
我知道。
Money spent on the brain is never spent in vain.
智力投资，决非虚掷。
Last year, we were travelling across the Channel and Jane put a piece of paper with her name and address on it into a bottle.
去年，当我们横渡英吉利海峡时，简把写有她姓名和住址的一张纸条装进了一只瓶子，