An overview of a situation is a general understanding or description of it as a whole.
例句
The central section of the book is a historical overview of drug use.該書的核心部分對毒品的使用作了歷史概述。
英漢詞典釋義
n.
綜覽,概觀,概述；概況
I’m afraid I can’t give you a general overview of the situation.I can only offer you a worm’s-eye view that is based on my own experience.我恐怕沒法從總體上向你介紹這里的情況。我只能談一下自己的切身體會。The opening chapter gives a brief historical overview of transport.第一章是運輸史的簡要回顧。The seminar aims to provide an overview on new media publishing.研討會旨在綜覽新興的媒體出版。
英英詞典釋義
Noun
1. a general summary of a subject;
"the treasurer gave a brief overview of the financial consequences"