他是白人社区中的一位重要人物。

He is a prominent figure in the ___white community.

像当时许多人一样，他的交往大多局限于白人社区内部。

Like many at that time, his interactions were mostly within the ___white community.

该政策旨在解决某些地区白人工人阶级面临的差距问题。

The policy aims to address disparities faced by the ___white working class in certain regions.