Sentinel node
[医] 信号结
🧩 词语组成解析
sentinel
['sentinl]
n. 岗哨，哨兵;
node
[nəud]
n. 节点;（计算机网络的）节点;[医]结节;植物的节;
🗣️ 情景例句
I major in English and minor in French.
我主修英语，副修法语。
To stand on your hands
倒立
Who was second? Who was third?
谁是第二？谁是第三？