once and for all片語KK [wʌns ənd fɔr ɔl] /wʌns ənd fɔɹ ɔl/發音片語1一勞永逸地、徹底地、一次解決地We need to settle this dispute once and for all.我們需要一勞永逸地解決這場爭端。2最後一次、就此、從此I'm telling you once and for all: stop calling me at night.我最後跟你說一次:別在晚上打電話給我。