尽力而为

I shall do what I can insofar as I am able.

力所能及的情况下我将尽力。

Though a little roupy and exhausted,I've always tried my best.

有些沙哑，有些筋疲力尽。但我已尽力。

The country needs enormous help to rebuild its economy, and it’s time to take up the gauntlet and do what we can.

重建国家的经需大量的援助，我们应当迎接挑战，尽力。