每个人都会成为清洁地球的冠军，干净的大地正发出的渴望干净的声音。
There are countless ways to fight pollution and waste and become a champion for a clean earth.
我认为，我们可能无法在全球范围内实行那样的的想法，清洁地球是一个很艰巨的任务。
I think we might not get there with technology on a global scale - to clean up the globe is a lot to ask.
我们必须开发清洁能源，为新的产业提供动力，摆脱外国石油的束缚，并保护我们的地球。
We must develop the clean energy that can power new industry, unbind us from foreign oil, and preserve our planet.
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