dissertation
🇺🇸
/ˌdɪsərˈteɪʃn/
🇬🇧
/ˌdɪsəˈteɪʃn/
a long written work on a specific topic, usually required for a university degree
She spent a year writing her dissertation on climate change for her master's degree.
她花了一年時間撰寫關於氣候變化的碩士論文。