Is factory farming really cheaper?

办工厂化畜牧场真的省钱吗？

It addresses factory farming and environmental problems associated with eating meat.

书里面描述了肉食带来的农业和环境问题。

So is so-called swine flu really just another environmental problem associated with factory farming?

那么是不是所谓的猪流感真的仅仅不过是又一个与养殖场有关的环境问题呢？

Factory farming has made life an unimaginable hell for the billions of pigs raised and killed for food.

工厂式农场让几十亿养殖，最后被宰杀的猪的生活变成令人发指的地狱。

Let's take a look at a few implications of factory farming, as they relate to each of the four categories mentioned above.

让我们分别从上面所说的四个角度，来看一看工厂化农业到底意味着什么。