In the knowledge economic times, the key competition elements of the enterprises have been transferred from the traditional material and finance resources to the human resource.
知识经济时代，企业间竞争的关键要素已逐渐由传统的物力资源、财力资源转为人力资源，人力资源管理对企业的重要作用已渐为业界所共识。
Among human being's food resources, protein is the major elements for the composition of body blood, tissue organs, also it is the indispensable nutritional element for body growth recovery.
在食物来源中，蛋白质是构成身体血液，肌肉和组织的主要成分，它也是身体成长和康复不可缺少的营养素。
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