在人类历史长河中，手写语言演化了不仅仅一次。
Written language may have evolved more than once in human history.
复仇文学记载了人类历史长河中悲壮凄美的个体奋斗和社会实践历程。
The literature on revenge has recorded the moving and tragic scene of personal struggle and social experience in the history.
纵观人类历史长河，利益分化是人类现实生活中普遍存在的社会现象。
Throughout human history, the benefit differentiation is in the human real life the universal existence social phenomenon.
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