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
And if it's successful,
假如成功的话，
I took out my pen.
我拿出了我的笔。
After all, I am the only one of my aunt's relations still alive.
不管怎么说，我是我伯母的亲戚中唯一一个还活着的人。