烦请高手把下面的文章翻成英文.不要即时翻译、机器翻译和其他一些文不对题的翻译.糊涂，文章补上。本文通过四个章节对企业留住核心员工的对策进行研究：第一章从界定核心员工的定

Question

烦请高手把下面的文章翻成英文.
不要即时翻译、机器翻译和其他一些文不对题的翻译.
糊涂，文章补上。
本文通过四个章节对企业留住核心员工的对策进行研究：第一章从界定核心员工的定义出发继而总结了核心员工的特点。第二章简单阐述了核心员工流失给企业带来的有形与无形的成本。第三章从内部因素和外部因素两个方面分析了核心员工流失的原因。第四章是本文研究重点，从把好招聘关、待遇留人、环境留人、事业留人、反向激励法、建立完善的回聘机制等一整套系统的留人策略来留住企业核心员工，以保证企业的核心竞争力和可持续发展能力。

Answer 1

This article studies the measures to retain the core staffs of an enterprise though four sections.The first section summarizes the features of the core staffs starting from the definition of core staffs.The second section briefly describes the tangible and intangible cost brought to an enterprise due to the running off of its core staffs.The third section analyzes the reasons of running off of core staffs from both internal and external factors.The fourth section is the most part of this article,it proposes a series of measures for retaining the core stafs for an enterprise,including paying more attention to the recruitment link,retaining core staffs with good treatment,good environment,good job prospect,reversed incentive method,establishing a perfect recall mechanism,etc.,so as to ratain the core staffs of an enterprise and ensure the core competitive power and sustainable development capability of an enterprise.