semisynthetic antibiotics

基本解释

Rifampin is a semisynthetic antibiotics.
利福平是一种半合成抗生素。
Early antibiotics were natural microbial products, But chemists have modified the structures of many to produce semisynthetic and even wholly synthetic ones.
早期的抗生素是由细菌自然生成的产物，化学家改变许多结构产生出半合成或完全合成的抗生素。
The development, research and manufacturing of antibiotics undergo three stages:natural antibiotics, semisynthetic antibiotics and pharmacologic active substance.
就其发展史而言，抗生素的研究、生产可分为天然抗生素、半合成抗生素和药理活性物质三个发展阶段；