·2,447,543篇论文数据，部分数据来源于NoteExpress
"The circulation" of DCC is reflected in the newspaper, which has more columns, more diverse areas, and more coverage of the corpus.
流通性体现在栏目信息尽可能多样的报纸，发行地区应尽可能多样，语料的覆盖量要足够大。
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