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
Or at least I think I do.
至少我想我有了答案。
Kate is smarter than I.
凯特比我聪明。
Good idea! It's much better than having classes! Can I go, too?
好主意！这比上课好得多！我也可以去吗？