求翻译：本文研究新的《劳动合同法》对《劳动法》补充和完善的内容，分析《劳动合同法》对中国企业人力资源管理实践的影响和挑战。是什么意思？

In this paper, a new labor contract law to supplement and improve the content of the labour code, analysis of the labor contract law's influence on China Enterprise human resource management practices and challenges.