[] a detailed account of the development of a person, a group of people or a situation over a period of time, especially for teaching or training（尤指教学或培训用的）案例研究，个案研究◆The results are based on case studies of 27 leading companies.这结果是根据 27 家龙头企业的个案研究所得的。◆a business school case study商学院的案例研究◆case study interviews案例研究访谈⨁to offer / present / provide / teach / write up a case study提供／展示／提供／教授／撰写案例研究a particular example of sth that is used to explain a theory, a rule, an idea, a method, etc.（用来解释理论、规则、理念、方法等的）例子◆The agency's success is a case study of / in leadership in a difficult situation.这机构的成功是困难情况下领导有方的例证。⨁to be / provide a case study (of/in sth)是…的例子；提供例证