雪: snow, (literary) to wipe away (a humiliation etc)...
机灵: clever, quick-witted...
外婆: (coll.) mother's mother, maternal grandmother...
回头: to turn round, to turn one's head, later, by and by...
孔: hole, classifier for cave dwellings...
下旬: last third of the month...
用功: diligent, industrious (in one's studies), to study hard, to make great effort...
打捞: to salvage, to dredge, to fish out (person or object from the sea)...
张扬: to display ostentatiously, to bring out into the open, to make public, to spread around, flamboyant, brash...
流水: running water, (business) turnover...