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
You can't believe all these ads.
你不能全信广告。
Let us imagine a hypothetical case where we disagree.
让我们假设一个我们不同意的状况。
so she sat down and accepted a cup of very strong tea, while he telephoned the police.
于是坐了下来，喝了一杯浓茶。与此同时，看门的人给警察挂了电话。