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
A downpour like this never lasts long here at this time of year.
这里每年这个时间象这样的大雨不会下得很久的。
Excuse me to have kept you waiting.
对不起让你就等了。
It seemed certain that this would win the prize.
看来这个饼干获奖无疑了。