So if somehow I thought if you could tap the rotational energy of the earth by slowing the earth down, maybe we could use it to satisfy the world energy consumption.
所以若以某种方法，我想，如果你们能够，通过减慢地球转速，转换地球的旋转能量，我们可以将其用于，弥补地球的能量消耗。
On the "limited earth," perhaps the most important challenges for scientists are problems related to the use of energy and the impact on our living environment.
就有限的地球而论，对科学家们的最重大挑战，或许是涉及能源使用和其对生活环境冲击的问题。
People directly use only a fraction of the solar energy that reaches the earth.
人们对到达地球的太阳能的利用仅仅是很小的一部分。
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