在目前更有成效的也许是在中下层的接触。

It is probably more productive—for the time being, at least—to engage at the lower and midlevels.

我的童年是中下层家庭的灰色童年，在乡村暗淡的一隅中度过。

Mine was the grayish childhood of a lower-middle-class family, spent in a village in obscure corner.

洋溢着一种以民为本、以天下为己任的社会责任感及历史使命感，集纳了中下层知识分子的理想人格和价值追求。

From them people can learn Social responsibility favorabal to people and their value pursue among the middle and Common intellectual.