Sentinel node
[醫] 信號結
?? 詞語組成解析
sentinel
['sentinl]
n. 崗哨，哨兵;
node
[n?ud]
n. 節點;（計算機網絡的）節點;[醫]結節;植物的節;
??? 情景例句
Things will work out in the end.
事情最終都會解決的。
How much is a hair cut?
剪一次頭發要多少錢？
She works very hard and is very helpful.
她工作非常努力，對同學們幫助很大。