The continuous and reckless use of synthetic chemicals for the control of pests which pose a threat to agricultural crops and human health is proving to be counter-productive.

为控制害虫，人们持续且不计后果地使用人工合成化学品，对农作物和人类健康造成危害，事实证明会产生相反的效果。

youdao

And that is what I deny. That is what I claim is not capable in human beings. It's capable in rivers, in chemicals, but not in human beings.

而这正是我否定的地方，这就是我所说的，不是人类的能力，在河流有能力，在化学品，而不是在人类。

youdao

Floodwater may contain human and animal wastes, and other pollutants like agricultural and industrial chemicals.

洪水包含了人类的和动物的垃圾和其他像农业和工业的化学污染。

youdao

The defendant had also allegedly used the internet to search for the best rope for tying people up, human flesh, white slavery and chemicals to render someone unconscious.

BBC: 'Cannibal plot' NY policeman Gilberto Valle on trial

Mr Valle also used the internet to research the best rope for binding people and to learn which chemicals render a person unconscious, and used search terms including human flesh and white slavery, prosecutors said.

BBC: Gilberto Valle 'cannibal cop' trial ends in New York

The defendant had also allegedly used the internet to look for the best rope for tying people up and chemicals to render someone unconscious, and using search terms including human flesh and white slavery.

BBC: 'Cannibal plot' case set to conclude in New York