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- Through a series of chemical reactions the ice has created oxygen.
- 冰通过一系列化学反应制造氧气。
- While the planet was frozen,
- 地球结冰时,
- the Sun's ultraviolet rays reacted with water
- 太阳紫外线与冰里的水分子起作用
- molecules in the ice, to produce hydrogen peroxide, a chemical rich in oxygen.
- 制造富含氧的化学物质--过氧化氢
- Now, as the ice melts, the hydrogen peroxide breaks down and releases massive amounts of oxygen.
- 此时冰融化,过氧化氢分解并释放大量的氧。
- The Earth is waking up,
- 地球渐渐醒来,
- and it's a very different place.
- 它变得截然不同。
- 600 million years ago, the atmosphere is warmer, like a summer day.
- 6亿年前的大气比较暖和,感觉像夏天,
- And the days are about 22 hours long.
- 而且一天大约持续22小时,
- Add all this water and it's the perfect recipe for life.
- 加上这些水,就成了创造生命的完美环境。
- Before Snowball Earth, primitive bacteria emerged in the oceans.
- 雪球地球期前,海里已有原始细菌,
- But surely they couldn't have survived an ice age 75 times longer than the entire span of human history.
- 但它们绝不可能熬过比人类历史长了75倍的冰河期。
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本片就比如在地球刚刚形成时就有摄影机记录下每个重大事件。本节目将以写实电脑动画带领观众踏上旅途,穿越45亿年,介绍地球的诞生期、冰河时期、巨大火山喷发、恐龙的统治以及早期人类。
来源:可可英语 http://www.kekenet.com/Article/201908/591974.shtml