Flack's node
[医] 弗勒克氏结, 窦房结
🧩 词语组成解析
node
[nəud]
n. 节点;（计算机网络的）节点;[医]结节;植物的节;
🗣️ 情景例句
They're open until nine o'clock.
他们开到九点。
The doctor is afraid there is no hope for him.
医生担忧他已经无望了。
It is possible that upon such an occasion a battle ensued, with the sharks being driven away or killed.
双方可能随之发生搏斗，搏斗结果是海豚赶走或咬死鲨鱼。