全部

1·The survey covers a representative sample of schools.

调查覆盖了有代表性的一些学校。《牛津词典》

2·Extracurricular activities reflect the differences in child rearing in the Pew survey, which was of a nationally representative sample of 1,807 parents.

皮尤研究中心对全国范围内具有代表性的1807名父母组成的样本进行了调查，发现课外活动反映了育儿方式的差异。

3·Extracurricular activities reflect the differences in child-rearing in the Pew survey, which was of a nationally representative sample of 1,807 parents.

课外活动反映了皮尤研究中心育儿方式的差异，这是从对全国1807名家长的代表性抽样调查的结果。

4·We have a representative sample.

我们有一个代表性的样品。

5·The survey covers a representative sample of the population.

这次调查包括有代表性的人口样本。

6·A representative sample of manual tests are executed and timed.

一个代表性的手工测试的例子被执行，并记录时间。

7·Not every person with a sniffle need be tested-only a small, representative sample.

不是每个流鼻涕的人都需要接受检查——只要有一小份具有代表性的样本就行了。

8·The findings were based on a representative sample of 1, 398 people over age 18.

研究人员选取了1,398个18岁以上的人作为代表性样本进行研究。

9·The findings were based on a representative sample of 1,398 people over age 18.

研究人员选取了1,398个18岁以上的人作为代表性样本进行研究。

10·Great care was taken to try and get a representative sample of the general population.

受访人群都是经过细心挑选，能够代表大众的。