VERB
离题;偏离主题
If you digress, you move away from the subject you are talking or writing about and talk or write about something different for a while.
例句
I've digressed a little to explain the situation so far, so let me now recap...
刚才我稍稍离题说明了迄今的情况，现在让我来概述一下。
She digressed from her prepared speech to pay tribute to the President.
她脱离了发言稿的主题，对总统给予了高度赞扬。