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
What does the word care mean?
所谓 关心 是指什么呢
To organize a new political party
组织新政党
Somebody's knocking at the door. I'll answer it.
有人在敲门，我去开。