可惜: it is a pity, what a pity, unfortunately...
文章: article, essay, literary works, writings, hidden meaning...
谜: riddle...
工程师: engineer...
半: half, semi-, incomplete, (after a number) and a half...
姑姑: paternal aunt...
停滞: stagnation, at a standstill, bogged down...
顺从: obedient, to comply, to submit, to defer...
该: that, the above-mentioned, most likely, to deserve, should, ought to, owe...
烟花: fireworks, prostitute (esp. in Yuan theater)...