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
No.
没有。
The increase in sales is being maintained.
销售额持续增长。
He himself has done it lots of times!
他自己就已戒了很多次了！