Union set
[计] 并集
🧩 词语组成解析
set
[sɛt]
vt. 放置，安置;使处于某种状况;设置;摆放餐具;
vi. 落山;出发;凝结;
n. 一套，一副;集合;布景;电视机;
adj. 固定的;位于…的;顽固的;安排好的;
🗣️ 情景例句
Kids today have too much freedom, it's not like the old days.
现在的小孩太自由了，不像以前。
I wish to express my gratitude to you for your cooperation.
我要对你的合作表达感激之意。
only of metal, which wears away by friction.
而是由金属组成，而金属可以随着磨擦而磨损殆尽。