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
He started with them almost forty years ago.
他在那里做了快四十年了。
Whom will you invite to the picnic?
你将邀请谁参加野餐？
People become quite illogical when they try to decide what can be eaten and what cannot be eaten.
在决定什么能吃而什么不能吃的时候，人们往往变得不合情理。