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

我用来生产化学品以实现舒适生活的另一种方法是从大自然中提取它。

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.

员不是净化自然界中发现的东西，还积极努力改变化合物的化学结构，以开发更有效的治疗方法。

" 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.

“化学疗法”是一种将危险化学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部位的治疗方法——阻止扩散，我会说。