生命在地球上的出现及其演化有较长的历史。
The appearance of Earth life and its evolution have a long history.
地球上的生命进化或者人类社会的进化,只是一个单独的历史过程。
The evolution of life on earth, or of human society, is a unique historical process.
但是,我们知道,地球上的生命具有很长很复杂的历史。
But we know that life on earth has had a long and diverse history.
但是,我们知道,地球上的生命具有很长很复杂的历史。
But we know that life on earth has had a long and diverse history.
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