But from study condition to see currently, very few see the stone knife of Yellow River valley research, the Wei river current area article concerning stone knife research almost blank.
但是从目前研究状况看，甚少见到黄河流域的石刀研究，渭水流域关于石刀研究的文章几乎空白。
But from study condition to see currently, very few see the stone knife of Yellow River valley research, the Wei river current area article concerning stone knife research almost blank.
但是从目前研究状况看，甚少见到黄河流域的石刀研究，渭水流域关于石刀研究的文章几乎空白。
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