相反,今天我们人类共同使用超过7000种不同的语言,而这些语言并不是随机分布在地球上的。
Instead, today, our species collectively speaks over seven thousand distinct languages, and these languages are not spread randomly across the planet.
相反,今天我们人类共同使用超过7000种不同的语言,而这些语言并不是随机分布在地球上的。
Instead, today our species collectively speaks over 7,000 distinct languages, and these languages are not spread randomly across the planet.
复杂的生命在地球表面进化,而不是在火星或太阳系的其他行星上,因为在那些行星上,早期的地表生命被紫外线杀死了。
Complex life evolved on the Earth's surface, but not on Mars or other planets in the solar system because on those planets, early surface life was killed by UV radiation.
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