derive

vt. 源于；得自

vi. 起源

n. (Derive)人名；(法)德里夫

中文词源

derive 衍生于

de-, 从，向下，离开。-riv, 流动，词源同run, rivulet. 原指从源头处流下，引申义衍生于。

derive: derive: [14] Like rival, derive comes ultimately from Latin rīvus ‘stream’. This was used as the basis of a verb dērīvāre, formed with the prefix dē- ‘away’, which originally designated literally the ‘drawing off of water from a source’. This sense was subsequently generalized to ‘divert’, and extended figuratively to ‘derive’ (a metaphor reminiscent of spring from). English acquired the word via Old French deriver.
=> rival
derive (v.): late 14c., from Old French deriver "to flow, pour out; derive, originate," from Latin derivare "to lead or draw off (a stream of water) from its source" (in Late Latin also "to derive"), from phrase de rivo (de "from" + rivus "stream;" see rivulet). Etymological sense is 1550s. Related: Derived; deriving.

分析：“得来”的谐音；记忆：得来就是“derive”。

1. Most patients derive enjoyment from leafing through old picture albums.: 大多数病人都很喜欢翻看旧相册。

2. Nor does scientific knowledge derive straightforwardly from experiments and observations.: 科学知识也并非简单地从试验和观察中得来。

3. Females and cubs clearly derive some benefit from living in groups.: 雌兽与幼崽显然受益于群居.

4. It is valid to consider memory the oldest mental skill, from which all others derive.: 我们有理由认为记忆是最原始的心智技能，所有其他技能都在此基础上衍生出来。

5. 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。