We should spare no effort to protect our environment.

我们应该不遗余力保护环境。

We should spare no effort to beautify our environment, because it is shared by all the human beings.

我们应不遗余力地美化我们的环境，因为它是全人类共有的。

Don't you think it essential that every resident of Nanjing should spare no effort to make contributions to Nanjing 2014 Youth Olympic Games?

你不认为每一个南京人民都应该不遗余力地为南京2014年青奥会做出贡献吗？

We need to spare no effort to do that.

我们必须不遗余力地这样做。

And I will spare no effort to keep moving!

并且我会全力以赴的继续成长自我！