问题描述：
英语翻译
In the last years of the Warring States period,the State of Qin attacked the State of Wei on a large scale repeatedly and occupied large areas of land,for the State of Wei was too weak to defend itself.In 273 B.B.,the qin army launched another attack upon the State of Wei with a momentum more vigorous than ever.
In the last years of the Warring States period,the State of Qin attacked the State of Wei on a large scale repeatedly and occupied large areas of land,for the State of Wei was too weak to defend itself.In 273 B.B.,the qin army launched another attack upon the State of Wei with a momentum more vigorous than ever.
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