It's a long story and I'll tell you some other time.
说来话长，我下次告诉你。
语言点：It's a long story. 这是个很长的故事，就是指“说来话长，一言难尽”。如果有人约你出去而你恰好没空，就可以说" Maybe some other time." 意思是“改天吧，下次吧”。
It's a long story and I'll tell you some other time.
说来话长，我下次告诉你。
语言点：It's a long story. 这是个很长的故事，就是指“说来话长，一言难尽”。如果有人约你出去而你恰好没空，就可以说" Maybe some other time." 意思是“改天吧，下次吧”。