【英语时差8,16】抗生素历史2

（单词翻译）

 Since that time, scientists have found that numerous species of fungi¹ produce chemicals to destroy bacteria and that bacteria even produce chemicals that destroy other bacteria. Antibiotics² are relatively³ new in modern medicine, but the earliest medical records from China, Egypt, and Mesopotamia show that people have used moldy⁴ and fermented⁵ substances to treat wounds for over three thousand years. The ability to produce these chemical toxins⁶ may have evolved in bacteria as a survival tactic⁷. Today we use those same chemicals in our own struggle against bacteria.