用功: diligent, industrious (in one's studies), to study hard, to make great effort...
看台: terrace, spectator's grandstand, viewing platform...
何苦: why bother， is it worth the trouble?...
门: opening, door, gate, doorway, gateway, valve, switch, way to do something, knack, family, house, (religious) sect, school (of thought), class, category, phylum or division (taxonomy)...
部队: army, armed forces, troops, force, unit...
首次: first, first time, for the first time...
纳税: to pay taxes...
脑子: brains, mind...
