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
Fast asleep.
正熟睡着呢。
There is a skeleton in every house.
每座房子都有骨架。
I'll see that doesn't happen again.
我会注意以后不会再发生那样的事。