Sigmoid cavity
[医] 乙状窝(指尺骨的棒月切迹及桡骨切迹或桡骨的尺骨切迹)
🧩 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
🗣️ 情景例句
That's out of the question.
决不可能。
Excuse me I couldn't help you.
对不起我不能帮助你。
That's why I didn't see the sign.
所以我才没看见那牌子。