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
How many people are there in your family?
你家里有几口人？
You may go farther and fare worse.
一动不如一静。
I'm not sure. It was difficult to see. Wei Hua and Sun Meiying were both neck and neck.
我不敢肯定。很难说。魏华和孙美英不分上下。