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单词 secondary source
释义 secondary sourceBrE /ˈsekəndri sɔːs/NAmE /ˈsekənderi sɔːrs/ nouna book or other source of information where the writer has taken the information from some other source and not collected it himself or herself 二手资料   compare primary source
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更新时间:2025/2/13 18:29:03