Collective sampling unit
[计] 成组抽样单位
🧩 词语组成解析
collective
[kə'lɛktɪv]
adj. 集体的;共同的;集合的;集体主义的;
n. [统]集体;[语]集合名词;集团;
col一起+lect选择，收集+ive...的→集中到一起→集体的
sampling
['sɑ:mpliŋ, 'sæ-]
n. 抽样;取样;（乐曲的）节录;选录;
unit
['ju:nit]
n. 单位，单元;装置;个体;[数]单位数;
🗣️ 情景例句
Where's Robbie? Robbie
在哪儿？
I was so tired I couldn't keep up with her.
我太累了，跟不上她的步伐。
By the way, I came into this classroom last Saturday morning, and it was not as clean as usual.
顺便提一句，上星期六上午我来到这个教室时