The key difference is in the depth and detail people are looking for. For those who want a quick overview of a historical period, watching a few documentaries is a good choice. But for a deeper understanding, reading a book is necessary. People usually watch TV for just an hour or two, so documentaries have to cover a lot quickly and might miss things. Books, on the other hand, can provide more comprehensive coverage without this limitation.
主要区别在于人们寻求的深度和细节程度。对于那些想要快速了解历史时期的人来说,看几部纪录片是个不错的选择。但要深入理解,就需要阅读书籍。人们通常只能看一两个小时的电视,所以纪录片必须快速涵盖很多内容,可能会遗漏一些事情。而书籍则可以提供更全面的内容,没有这种限制。