Sinuatrial
a. [解]窦房的
🗣️ 情景例句
When you start discussing politics, I'm completely out of my depth.
你们一谈论政治，我就一窍不通了。
Nothing will come of nothing.
无风不起浪。
Their burnt bodies were found later.
后来只找到他们被烧焦的尸体。