Cluster sampling
[计] 分组取样, 聚类取样\\n[经] 成群选样, 成串采样
🧩 词语组成解析
n. 丛;簇,串;群;[语言]辅音群;
vi. 丛生;群聚;
vt. 使密集,使聚集;
🗣️ 情景例句
It seems doesn't understand.
看起来他好像不了解。
His answer was to lift the vessel out of the water by making it ride on a cushion of air,
他的解决办法是把船体提离水面,让船在一个气垫上行驶,
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