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单词 primary source
释义

primary source

ˌprimary ˈsource noun [countableC]  
a document, book etc that contains information that has been obtained from people’s experiences and not taken from other documents, books etc 〔通过实验、访谈等获得的〕第一手材料,直接资料 secondary source
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更新时间:2025/8/17 5:33:30