But the cumulative impact or effect that they can have on an individual is where the problem really lies.

但它们对个人产生的累积影响或影响才是问题的真正所在。

On our own, we cannot end wars or wipe out injustice, but the cumulative impact of thousands of small acts of goodness can be bigger than we imagine.

就我们自己而言，我们无法结束战争，扫荡不公，可成千上万微不足道的善行累加起来，却产生我们想象不到的影响。