我们正在解决的可能是我们所知的人类进化过程中缺失最大的一环。
We're dealing with probably the biggest missing link in what we know about human evolution.
为什么化石记录没有记录动物进化过程中的一系列进化变化?
Why does the fossil record not document the series of evolutionary changes during the evolution of animals?
它们向我们展示了进化过程中半成品的样貌,而完全进化的结果是鲸鱼和儒艮。
They show us what the intermediates might have been like, on the way to extreme cases such as whales and dugongs.
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