石刀是常见的生产工具之一，能够一定程度反映古代人类的社会生产活动。
The stone knife is one of familiar implements of productions, can the certain degree reflect the ancient mankind's social production.
“孟姜女哭长城”的故事反映出古代人民对暴君的不满以及对坚贞女性的赞扬。
The story of "Meng Jiangnv bringing down the Great Wall with tears" reflects the grievances ancient people had about tyrant rule as well as the praise of unyielding women.
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