If you have either, you e paying to keep the soybean aphid away from the crop that feeds cattle and pigs.

如果你有二者之一，你要为防止大豆蚜虫侵害饲养牛和猪的作物而买单。

Their fungus farming and aphid herding crafts are sophisticated when compared to the agricultural skills of humans five thousand years ago but have been totally overtaken by modem human agribusiness.

与五千年前人类的农业技术相比，他们的菌类种植和蚜虫养殖技术非常复杂，但已经完全被现代人类的企业化农业所超越。

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.

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。