Sigmoid sinus
乙状窦
🧩 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. 窦, 静脉窦, 凹陷处
🗣️ 情景例句
Let's see some action!
赶快行动起来吧！
It was quite good. But it was awfully long.
班机很好，就是时间太长了。
I don't know. I haven't made up my mind yet.
不知道。我还没下定决心呢。