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
It's tough getting an O.K. from the boss.
很难从老板那听到声“同意”。
Showoff!
爱现！
How can I climb up that wall! I wish I were a bird!
我怎么能够爬得上那堵墙？我要是一只鸟就好了！