坟墓: grave, tomb...
海底: seabed, seafloor, bottom of the ocean...
场地: space, site, place, sports pitch...
懂: to understand, to comprehend...
民用: (for) civilian use...
讲学: to lecture (on branch of learning)...
烟花爆竹: fireworks (i.e. pyrotechnic devices, not the display they produce)...
样子: appearance, manner, pattern, model...
来得及: there's still time, able to do sth in time...
权利: right (i.e. an entitlement to sth), (classical) power and wealth...
