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 don't look a day over ...
你看起来一天也不比……大。
But we cannot afford to depend on tradition alone.
但是我们不能靠吃老本过日。
So while the rest of the world was trying to get rid of mosquitoes, Australia was encouraging this one.
因此，世界上其他地方在设法消灭蚊子的时候，澳大利亚却在促使这种蚊子大量繁殖。