Sinus
n. 窦, 静脉窦, 凹陷处
✅ 同义词
📖 牛津释义
sinus
n
cavity in a bone, esp any of the air-filled spaces in the skull that are connected to the nostrils 窦（骨骼中的空穴, 尤指颅骨中的）.
🏥 医学释义
窦房结，窦
🗣️ 情景例句
Yes.
是的。
He is a big figure in the business world.
他在商界是一位很有威望的人。
I really ought to go and have my eyes tested.
我确实该去检查一下我的眼睛了。