谜底: answer to a riddle...
圆: circle, round, circular, spherical, (of the moon) full, unit of Chinese currency (yuan), tactful, to make consistent and whole (the narrative of a dream or a lie)...
荒唐: beyond belief, preposterous, absurd, intemperate, dissipated...
型号: model (particular version of a manufactured article), type (product specification in terms of color, size etc)...
满: to fill, full, filled, packed, fully, completely, quite, to reach the limit, to satisfy, satisfied, contented...
参军: to join the army...
真的: really...
掌管: in charge of, to control...
狗: dog...
七: seven, 7 七年 seven years...