应该在那个年龄阶级实施呢？

In that age class should be implemented?

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许多因素都很重要，如阶级、性别、年龄及民族。

Many factors are important, for example class, gender, age and ethnicity.

《牛津词典》

凯萨还根据技能水平、种族、年龄、阶级和性别详细分析了失业模式。

Keyssar also scrutinizes unemployment patterns according to skill level, ethnicity, race, age, class, and gender.

youdao