Sinus node
窦房结
🧩 词语组成解析
n. 窦, 静脉窦, 凹陷处
node
[nəud]
n. 节点;（计算机网络的）节点;[医]结节;植物的节;
🗣️ 情景例句
We're particularly interested in your line of rackets.
我们对贵公司的球拍系列特别感兴趣。
I'm afraid the pollution will kill us all.
公害可能把我们都逼死。
But as the paper moved from side to side under the pen point,
由于纸在笔尖下来回运动，