升学: to enter the next grade school...
悲痛: grieved, sorrowful...
比不上: can't compare with...
沧桑: great changes, ups and downs, vicissitudes, abbr. of...
青少年: adolescent, youth, teenager...
星期天: Sunday...
停滞: stagnation, at a standstill, bogged down...
这就是说: in other words, that is to say...
源于: has its origins in...
改革: reform, to reform...