奥秘: secret, mystery...
准备: preparation, to prepare, to intend, to be about to, reserve (fund)...
乖: (of a child) obedient, well-behaved, clever, shrewd, alert, perverse, contrary to reason, irregular, abnormal...
契机: opportunity, turning point, juncture...
诉苦: to grumble, to complain, grievance...
一举两得: one move, two gains (idiom); two birds with one stone...
急功近利: seeking instant benefit (idiom); shortsighted vision, looking only for fast return...
曲子: poem for singing, tune, music...
窗子: window...
大数据: big data (computing)...
