Derived
“Derived” 作动词过去分词时常接 from（derive from），表示来源、由来；作形容词指“衍生的、非原始的”，如 derived data（衍生数据）、derived word（派生词）。
- “The word ‘happiness’ is derived from ‘happy.’” (单词 happiness 由 happy 派生而来。)
- “Many customs derived from older farming traditions.” (许多习俗源自更古老的农耕传统。)
- “The report uses derived metrics, not raw sales figures.” (报告使用的是衍生指标，而非原始销售额。)
来自拉丁语 derivare（引流开），de-（离开）+ rivus（溪流）。
“derived” = “derive” + “-ed”；名词为 derivation。
学术与数据科学语境极高频；语言学里 derived form 是基础术语。
- 固定搭配: “derived from” (源自), “derived class” (派生类——编程), “derived benefit” (附带好处)。
de-（离开主干）+ riv（河）→ 从主河道“引出一支”就是衍生。
“The name of the village was derived from an old word meaning ‘white stone.’” (村名源自一个意为“白石”的古词。)