Sigmoid fossae
[医] 乙状窝(乳突的S字形沟)
🧩 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
pl. 窝, 凹\\n[医] 窝, 凹
🗣️ 情景例句
It's nice to see you again.
很高兴再见到你们。
The spacecraft is scheduled to arrive at Saturn next year.
太空船预定明年到达土星。
What's wrong with it?
怎么了？