Fossilized remains of Acanthostega, a primitive fish, reveal that even though the animal had rudimentary limbs, it could not walk on land.
棘螈是一种原始鱼类，它的化石遗迹显示，尽管棘螈有基本的四肢，但它却不能在陆地上行走。
I'm not sure that your fish will be able to remember what your face looks like, but I wouldn't be too surprised if it could remember you in other ways, perhaps by the sound of your footsteps as you walk towards the tank.
我不确定你的鱼是否能记住你的脸，但如果它能以其他方式记住你，也许是通过你走向鱼缸时的脚步声，我也不会太惊讶。
Then, with indescribable terror, he recognizes the fact that he is caught in a quicksand, and that he has beneath him that frightful medium in which neither man can walk nor fish can swim.
于是他变得无可名状地惊恐起来，意识到他已被围困在流沙之中，在他下面是人不能走、鱼不能游的恐怖地带。
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