Sinus sigmoideus
<拉>乙状窦
🧩 词语组成解析
n. 窦, 静脉窦, 凹陷处
🗣️ 情景例句
He was ill at ease at her birthday party.
他在她的生日宴聚会中心神不宁。
Quality is better than quantity.
质重于量。
Everybody admires him for his great sense of humour --
人人都钦佩他那绝妙的幽默感 -- 人人，