The average stream tests for positive

平均每条溪流含有
for more then twenty pesticides

至少二十种农药
and a lot of the animals are affected as well.

很多动物也受到影响
One study came out about a particular aquifer in Nebraska,

在一项针对内布拉斯加含水土层的研究中
and they found that there were many pesticides found

研究者发现其中很多杀虫剂含量
in this aquifer at lifetime health advisory levels;

都达到了终身健康建议水平
and that atrazine--which is the most popular pesticide used--

阿特拉津最常用的杀虫剂
was found in 100% of the samples from this particular aquifer.

在该土层所有取样的样品中均有发现
Okay, so we're just about out of time

好了我们时间快到了
and there were two more things I wanted to talk about

我还有两样东西想说
but I'll spill these things over

但我会把它们放到
into the beginning of the next lecture,

下节课开头再讲