Nested sets
[计] 嵌套集合
🧩 词语组成解析
nested
[nestɪd]
adj. 嵌套的;
v. 筑巢( nest的过去式和过去分词 );
n. 集合, 设置（set的复数）
🗣️ 情景例句
What's the problem?
什么事？
Two dogs strive for a bone, and a third runs away with it.
鹬蚌相争，渔翁得利。
He set up a fine example to all of us.
他为我们树立了一个好榜样。