酒鬼: drunkard...
分辨: to distinguish, to differentiate, to resolve...
私家车: private car...
底蕴: inside information, concrete details...
猜谜: to answer a riddle, to guess (i.e. form an opinion without much evidence)...
奶奶: (informal) grandma (paternal grandmother), (respectful) mistress of the house, boobies, breasts...
