It just means that they had no reason to stay beyond the content they clicked through to read. This can be a normal stat for a blog type of site. It doesn't mean they didn't read your article, it just means that they didn't interact further with your website.
Adding related posts / in-line related posts / e.t.c can help reduce the bounce rate, but ultimately it is down to how well your content is tied together and the type of website you have. Make sure your site structure is clearly evident, so that a reader can easily find more of the same.
Again, if you are running a blog, high bounce rates can be normal. You are better off looking at time on page as a metric to determine whether or not your content is appealing.