“Measurement resources and details selection technique: The proponents will distribute on-line surveys to the respondents which is able to include questions that can evaluate the reason behind the dropouts. The study will retrieve Principal facts from the respondents…” -参考其他的文章，从图书馆搜寻近五年跟你研究的领域相关并且你感兴趣的文章。 在考虑了局限性并对他们的方法进行了概述之后... https://thesocialvibes.com/story12897040/what-does-%E8%AE%BA%E6%96%87%E4%BB%A3%E5%86%99%E4%BB%B7%E6%A0%BC-mean