回去: to return, to go back...
太极: the Absolute or Supreme Ultimate, the source of all things according to some interpretations of Chinese mythology...
时隔: separated in time (usu. followed by a quantity of time)...
必: certainly, must, will, necessarily...
抑郁: depressed, despondent, gloomy, depression...
学生: student, schoolchild...
兴旺: prosperous, thriving, to prosper, to flourish...
急忙: hastily...
校园: campus...