Sinus sigmoideus
<拉>乙状窦
🧩 词语组成解析
n. 窦, 静脉窦, 凹陷处
🗣️ 情景例句
Then, take this afternoon off.
那么，今天下午就休息一下吧。
He was anxious about his son's safety.
他担心他儿子的安全。
Beyond two or three days, the world's best weather forecasts are speculative,
世界上最好的两三天以上的天气预报具有很强的猜测性，