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case studies
A case study is a written account that gives detailed information about a person, group, or thing and their development over a period of time.
a large case study of malaria in West African children.
一个关于西非儿童疟疾病情的大型个案研究。
雅思英语词汇收录8785个雅思英语词条，基本涵盖了全部常用雅思英语词汇的翻译及释义，是英语学习的有利工具。