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
Help yourself, please.
请随便。
We're afraid that your product's quality won't satisfy Chinese customers.
恐怕你们的产品质量无法使中国顾客满意。
How old are you?
你多大了？