derive their food from other organisms

例句：

1. 1.The company's profits have been deriving from its new product line.
   该公司的利润正从其新产品线中获得。
2. 2. The scientist derived the formula for the cure from ancient texts.
   科学家从古代文献中得出了治愈方法的公式。
3. 3. The research team has successfully derived a new drug from natural sources.
   研究小组已成功地从天然来源中提取出一种新的药物。