Energy is very strong in the sun. It lose a lot of strength by the time it goes into a plant. By the time an animal eats a plant, the energy is even less strong. When a second animal eats the first the first animal, it will get even less energy than the first animal gets. The second animal has to find and run after the first animal, so it will use more energy to catch the first.

能量在太阳里很强。当它进入植物体内时，它会失去很多力量。动物吃植物的时候，能量就更少了。当第二只动物吃掉第一只动物时，它得到的能量甚至比第一只动物得到的能量还要少。第二只动物必须寻找到并追逐第一只动物，因此它将使用更多的能量来捕捉第一只动物。