rock bottom片语KK [rɑk ˋbɑtəm] /ɹɑk ˈbɑtəm/发音片语1谷底、低谷、人生最低点He hit rock bottom before finally asking for help.他跌到人生谷底,最后才开口求助。2最低点、最低水平Sales reached rock bottom in the second quarter.销售额在第二季度降到了最低点。形容词1最低的、最低限度的The store sells last season's coats at rock-bottom prices.这家店以最低价出售上一季的外套。用这个字练口说→