Another method we use to produce chemicals to enable our comfortable life is to extract them from nature.

我们用来生产以实现舒适生活的另一种方法是从大自然中提取它们。

Researchers weren't just purifying what they found in nature anymore they were actively working to change the chemical structure of compounds to develop more effective treatments.

研究人员不是净他们在自然界中现的东西，他们还积极努力改变合物的结构，以有效的治疗方法。

" Chemotherapy" is the treatment where dangerous chemicals are put into your body to try to kill the cancer cells and stop the cancer from moving to other parts of your body – from spreading, we would say.

“疗法”是一种将危险物质放入您体内以试图杀死癌细胞并阻止癌症转移到您身体其他部位的治疗方法——阻止扩散，我们会说。