A doctoral thesis or piece of research is written or done in order to obtain a doctorate. 博士的
adjective [原级] 博士的，博士学位的
Eric told me that they postponed having children until he gets his doctoral degree. 埃里克告诉我，直到他拿到博士学位后他们才会要孩子。
后缀: al
【adjective】 表示具有某种性质的 - indicating pertaining to or characterized by
原词: doctoral
是通过后缀 【al】 构成的派生词
