If you want to understand today,you have to research yesterday.是什么意思

问题描述:

If you want to understand today,you have to research yesterday.是什么意思

前事不忘,后事之师。

要想了解今天就得研究昨天

想收获今天,你必须反思昨天

如果你想要明白今天,你就要研究昨天