揭: to take the lid off, to expose, to unmask...
文学: literature...
跨: to step across, to stride over, to straddle, to span...
次: nth, number (of times), order, sequence, next, second(ary), (measure word)...
人民: the people...
天: day, sky, heaven...
挽回: to retrieve, to redeem...
局: narrow, (a measure word used for games) set or round office, situation, office...
公约: convention (i.e. international agreement)...
图纸: blueprint, drawing, design plans, graph paper...