The survey covers a representativesample 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 representativesample of 1,807 parents.
Extracurricular activities reflect the differences in child-rearing in the Pew survey, which was of a nationally representativesample of 1,807 parents.