(n.) 博士头衔,博士学位
I earned my Doctorate in Chemical Engineering.
我有化学工程的博士学位。
major 
(n.) (大学中的)主修科目
What's your major at university?
你大学的主修是什么？
deep trouble
大麻烦
You'd better behave yourself or else you'll be in deep trouble when mom gets home.
你最好乖一点，否则妈一回来你就惨了
