All life on Earth needs water, carbon-based organic molecules, and an energy source, either solar or chemical.
地球上所有的生命都需要水、碳基有机分子和某种能量来源——不是太阳能就是化学能。
Everyone has the responsibilities of saving water, saving energy, reducing emission. Only these can we save our earth, that is, saving ourselves.
节约水和能源、减少排放，人人有责。唯有这样才能拯救我们的地球，也就是拯救我们人类自己。
This energy can be produced by capturing hot water and steam from deep in the earth or by using the relatively constant temperature of shallow ground to heat and cool.
地热可从地底下的热水和蒸气来产生，或是利用地表浅层相对而持续的温度来加热和冷却。
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