penicillin
发布时间:
英 [penɪ'sɪlɪn]
美[,pɛnɪ'sɪlɪn]
考试真题
- And the reality is that antibiotics have been responsible for saving millions of lives since penicillin, one of the earliest antibiotics, was first used on a clinical basis 70 years ago.
出自-2017年6月听力原文
