高等植物的某些器官在内外因素的作用下能发生有限的位置变化，这种器官的位置变化称为植物运动(plant movement)。分为向性运动(tropic movement)和感性运动(nastic movement)。
蚜虫的运动也是如此，当吃完一株食用植物的幼叶，它们的后代会飞到另一株宿主植物上，没有蚜虫会再回到最初的地方。
So can the movement of aphids when, having depleted the young leaves on one food plant, their offspring then fly onward to a different host plant, with no one aphid ever returning to where it started.
该运动将它转变为一个适合以本地动植物品种为基础的传统饮食文化发展的地区。
The movement transformed it into a region hospitable to traditional food cultures based on native plants and breeds of animals.
他们研究了太阳的运动，还关注了其他自然变化，如气温、水和植物生长。
They studied the sun's movement and also paid attention to other natural changes such as air temperature, water and plant growth.
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