Sinuatrial
a. [解]窦房的
🗣️ 情景例句
It's nice seeing you.
非常高兴见到你。
What are you going to do with the books?
你打算拿这些书怎么办？
Is this the man that you served, Caroline?
卡罗琳，这就是你接待过的那个人吗？