我会珍惜 我们所有的回忆 I "ll cherish all the memories about us .（all our memories ） 因为 那些 和你在一起的日子 cause the days with you 是我一生最幸福的时光 is the happinest time in my life. 或者后两句翻得生动一些还可以译成：The hours I spent with you were happiest of my life.(用hour显得再一起的时间更令人珍惜) 整句话就是 I "ll cherish all our memories .Cause the hours I spent with you were happiest of my life. 希望可以帮到楼主~