at one time英 [æt wʌn taɪm]美 [æt wʌn taɪm]一度;曾经英英释义advat a previous timeat one time he loved herher erstwhile writingshe was a dancer onceSynonym:onceformerlyerstwhileerstsimultaneouslyhe took three cookies at a timeSynonym:at a timeat once双语例句