derived association

例句：

1. 1. The new drug is derived from a natural substance.
   这种新药是从天然物质中提取出来的。
2. 2. The term "derivative" refers to a product that is made by taking something from another substance.
   “衍生物”这个词指的是通过从另一种物质中提取而得到的产品。
3. 3.The study of chemistry involves the derivation of compounds from simpler substances.
   化学研究涉及从更简单的物质中衍生出化合物的过程。