二に次じ資し料りょう

noun

secondary source

Used in academic research and computing contexts to refer to documents or data derived from primary sources.

• 論ろん文ぶんを書かくときは、一いち次じ資し料りょうだけでなく二に次じ資し料りょうも参さん照しょうする必ひつ要ようがある。

  When writing a paper, you need to consult not only primary sources but also secondary sources.