He heads an environmental group in Florida called One Village Planet that works in Ghana and Haiti.
VOA: special.2009.06.29
You bring iron ore from one part of the planet, carbon, limestone, you put it into this reactor and you ship this all over the world.
你得到钢铁从地球的一个地方,还有碳,石灰岩,将它们放入这个反应器,你将它运送到世界各地。
But smallpox was, at one time, one of the most frightening diseases on the planet.
但是天花曾经,是这个星球上最令人恐惧的疾病之一
One involves landing on the surface of the planet Mercury.
VOA: special.2010.05.25
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