我们对这个世道的影响是多么的苍白无力！

It's mostly powerless. It has no impact on the world.

每每想到这些，我会失去全身的勇气和意志，思想苍白无力，同情徒劳无益。

When I think about such things, I lose all courage and will, thoughts seem useless, and compassion, vain.

失去了才后悔，你的离开是那么的情非得已，可是我的挽留却那么的苍白无力。

I regret when I was lost. it is not because for your left but my detainment is weak.

不必提醒观众中国在整个事件中的表态如何一般，而应更多的关注日本的反应是怎样的苍白无力。

But not to remind viewers how bombastically China has behaved throughout the affair: rather, to draw attention to how weakly and ineffectually Japan has responded.