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Some scientists suggested that there had been a gradual evolution of life on earth.
一些科学家认为，地球上的生命是逐渐进化的。
youdao
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EVOLUTION is not always a process of gradual change.
进化并不总是一个逐渐变化的过程。
youdao
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EVOLUTION is not always a process of gradual change.
进化并不总是一个逐渐变化的过程。
youdao