keep on their toes片語KK [kip ɑn ðɛr toz] /kip ɑn ðɛɹ toʊz/發音片語1使保持警覺、使不敢鬆懈、讓人繃緊神經可拆開Surprise quizzes keep the students on their toes all semester.隨堂小考讓學生整個學期都不敢鬆懈。2使忙個不停、使不得閒口語Three young children certainly keep their parents on their toes.三個年幼的孩子確實讓父母忙個不停。