一定数量的有代表性的人群。的翻译：Representative of a certain number of people. 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

A certain number of representative groups.

Representative of a certain number of people.

Certain quantity has the representative crowd.

A certain number of a representative of the population.

Representative of a certain number of people.