derive的用法及短语

　　Mr Ying is one of those happy people who derive pleasure from helping others.

　　英先生属于那种助人为乐的快活人。

　　We can derive great pleasure from our studies.

　　我们可以从读书研究中获得极大的乐趣。

　　Our abstracts derive all originally from the concrete.

　　我们常用的抽象概念初始均来自具体事物。

　　ost of his ideas derive from those of his parents.

　　他的大多数见解源自他父母的见解。

　　These stories derive from his experiences during the Long March.

　　这些故事是根据他在长征中的经历写成的。