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
If you really mean it,
假如你是说真的，
In books,are embalmed the greatest thoughts of all ages.
伟大思想古今有，载入书中成不朽。
It's nine forty.
九点四十了。