没有周围的动物和植物，我们人类就无法生存。
We human beings could not survive without all the plants and animals around us.
如果没有水人植物和动物将会死亡地球将成为一个干得很好。
If there were no water people plants and animals would die and the earth would become a dry well.
我们人类不能没有我们周围的植物和动物。
We human beings could not live without all the plants and animals around us.
几乎所有植物和无脊椎动物物种以及半数的鸟类在世界上其他地方都是没有的。
Nearly all its plant and invertebrate species and half its birds are found no where else in the world.
你进入了一片数千英里都没有任何人、任何动物和任何植物的空旷地带。
You enter a void, thousands of miles, with no people, no animals, no plants.
大陆有些地区有较丰富的植物可食用，但那时没有人在这片土地上种植庄稼。这里也没有能被家养的动物，比如牛和羊。
S1: Some parts of the continent were richer in vegetable foods, but the land contained no cultivated crops, or animals that could be domesticated, such as cattle and sheep.
它们的光合作用色素比植物的更为多样，它们的细胞中具有植物和动物所没有的特点。
Their photosynthetic pigments are more varied than those of plants, and their cells have features not found among plants and animals.
当森林里再也没有了树木，当动物们吃光了所有的草和植物，森林就将变成沙漠！
When there are no more trees in a forest and the animals eat the grass and small plants, the forest will become a desert!
当森林里再也没有了树木，当动物们吃光了所有的草和植物，森林就将变成沙漠！
When there are no more trees in a forest and the animals eat the grass and small plants, the forest will become a desert!
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