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
He gave them to me to hold on to them
他给我戒指， 要我自己保管，
Do I need a reservation for the dining car?
我需要预订餐车吗？
What do you want to do next September? Do you have any plans?
你今年9月打算干什么？你有什么计划吗？