Fish can not live without water.
鱼儿离不开水。
This group of complex animals, which includes fish, birds, reptiles and mammals (like us humans) have highly specialised immune systems, which should not let these foreign organisms live in our cells.
这种复杂动物，包括鱼类、鸟类、爬行动物和哺乳动物(如我们人类)，具有高度细化的免疫系统，这样的系统不会允许这些外来生物体在我们的细胞中生长。
Not only can walking fish live out of water, but they can also travel short distances over land.
鲇鱼不仅可以离开水存活，还可以在岸上短距离移动。
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