鸦雀无声: crow and peacock make no sound, absolute silence (idiom); not a single voice can be heard, absolute silence...
大纲: synopsis, outline, program, leading principles...
晶莹: sparkling and translucent...
下决心: to determine, to resolve...
干脆: candid, direct and to the point, simply, just, might as well...
偷偷: stealthily, secretly, covertly, furtively, on the sly...
一概而论: to lump different matters together (idiom)...
无可奉告: (idiom) no comment...
联络: to get in touch with, to contact, to stay in contact (with), liaison, (math.) connection...
瞬间: in an instant, in a flash...
