what's meaning with " That was then ".please help me .

what's meaning with " That was then ".please help me .
what's meaning with " That was then ".
please help me .

what's meaning with " That was then ".please help me .
记住,以后问句子意义的问题请给出上下文的语言环境或做说明,比如说明这个句子是关于什么的
答案请看
1.That Was Then,This Is Now《古往今昔》
That was then 如果作为歌曲或电影名
可以翻译成 《那些时光》
2.That Was Then 在文章中可以有多种解释
如 1.就是这样了然后~
2.事情经过就是这样的
等翻译