She digressed from her prepared speech to pay tribute to the president.

她偏离了预先准备的讲稿，对总统表示了敬意。

I've digressed a little to explain the situation so far, so let me now recap.

我刚才稍微离题说明了迄今的情况，现在让我重述一下要点。

I digressed off of my digression.

我过我的题外话题外话。

He digressed so often that it was hard to follow what he was saying.

他时常跑题，所以很难听明白他想表达什么。