secondary source
名词 n.
英文释义
名词 n.
- A written commentary which discusses previously produced original work of another author, especially a notable author.
- A study of past events or a past author written from the perspective of a later period of time; a document that draws on one or more historical primary sources and interprets or analyses them, including documents such as newspapers whose accuracy is open to question.
词形变化
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数据来源: Wiktionary