中途: midway...
密度: density, thickness...
权利: right (i.e. an entitlement to sth), (classical) power and wealth...
后代: descendant, progeny, posterity, later ages, later generations...
四: four, 4...
嘉年华: carnival (loanword)...
人文: humanities, human affairs, culture...
唱片: gramophone record, LP, music CD, musical album...
折腾: to toss from side to side (e.g. sleeplessly), to repeat sth over and over again, to torment sb, to play crazy, to squander (time, money)...
海洋: ocean...