给出一篇英文文章，并提取其中的关键词。解释如何确定关键词。 
文章标题：“21世纪的职业技能”。文章内容包括关于技能、学位和行业对人才招聘的影响、技能培训和激励计划等方面的讨论。
Article Title: "21st Century Job Skills"

Keywords: job skills, degree, industry, talent recruitment, skill training, incentive plan

Explanation: To determine the keywords in the given article, one should first identify the main topics and themes discussed in the text. In this case, the article focuses on 21st century job skills, their impact on talent recruitment, and related issues such as industry trends, skill training, and incentive plans. Therefore, the keywords listed above reflect the main ideas and concepts addressed in the article.