·2,447,543篇论文数据，部分数据来源于NoteExpress
其次，对输入句子进行预处理，包括句法分析树的建立，合法片段的抽取及片段组合形式的转换；
This process includes the establishment of the parse tree, the extraction of the legal fragments and the transformation of the fragment combination forms. Finally, according to the set …
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