日前: the other day, a few days ago...
耳机: headphones, earphones, telephone receiver...
教学楼: teaching block, school building...
周密: careful, thorough, meticulous, dense, impenetrable...
正宗: orthodox school, traditional, old school, authentic, genuine...
没完没了: without end, incessantly, on and on...
祖宗: ancestor, forebear...
当年: that very same year, the past time...
事项: matter, item...
假使: if, in case, suppose, given......
