"Watching history videos in Engpsh at night" 可以用英文表达为 "reviewing history videos in Engpsh at night" 或 "watching history videos in Engpsh in the evening." 这种行为的来源可能是为了巩固历史知识，或者是为了提高英语能力。

下面是一些例句：

I always try to review history videos in Engpsh at night before I go to bed, because it helps me learn more about the world and improve my Engpsh skills.

Watching history videos in Engpsh in the evening is a great way for me to relax and learn something new at the same time.

I find that reviewing history videos in Engpsh at night helps me retain the information better, so I try to do it as often as I can.

翻译：

我总是在睡觉前晚上背历史英语视频，因为这有助于我了解更多关于世界的知识，并提高我的英语能力。

晚上观看历史英语视频是我放松身心并同时学到新知识的好方法。

我发现晚上背历史英语视频能帮助我更好地记住信息，所以我尽量经常这么做。