Stratified random sampling
[经] 分层随机抽样
🧩 词语组成解析
a. 分层的；形成阶层的；分为不同等级的
random
['rændəm]
adj. 任意的;随机的;胡乱的;
n. 随意;偶然的行动;
sampling
['sɑ:mpliŋ, 'sæ-]
n. 抽样;取样;（乐曲的）节录;选录;
🗣️ 情景例句
that the animal shelter is so careful
动物收容所需要如此小心
Excuse me, but may I ask a question?
对不起，我可以问个问题吗？
He had often dreamed of retiring in England and had planned to settle down in the country.
过去他常幻想退休后到英国，并计划在乡间安顿下来。