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ADJ-GRADED
简短的；短暂的
Something that is brief lasts for only a short time.
例句
She once made a brief appearance on television...
她曾经在电视上短暂露面。
This time their visit is brief.
他们这次的访问时间很短。
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ADJ-GRADED
（讲话或文章）简短的，简洁的
A brief speech or piece of writing does not contain too many words or details.
例句
In a brief statement, he concentrated entirely on international affairs...
他作了一个简短的声明，集中阐述了在国际事务方面的立场。
Write a very brief description of a typical problem.
就一个典型问题作简要的描述。
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ADJ-GRADED
简明扼要的
If you are brief, you say what you want to say in as few words as possible.
例句
Now please be brief — my time is valuable...
请长话短说——我的时间宝贵。
I hope to be brief and to the point.
我希望简明扼要，抓住重点。
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ADJ-GRADED
（时间）短的，短暂的
You can describe a period of time as brief if you want to emphasize that it is very short.
例句
For a few brief minutes we forgot the anxiety and anguish.
短短几分钟我们就忘记了焦虑与苦恼。
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N-PLURAL
短内裤
Men's or women's underpants can be referred to as briefs .
例句
A bra and a pair of briefs lay on the floor.
地板上有一个胸罩和一条短内裤。
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VERB
（尤指就某项工作或某一重大事件）向…简要介绍情况
If someone briefs you, especially about a piece of work or a serious matter, they give you information that you need before you do it or consider it.
例句
A Defense Department spokesman briefed reporters...
一位国防部发言人向记者们简要介绍了情况。
The Prime Minister has been briefed by her parliamentary aides.
首相已听取了她议会助手的简要汇报。
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N-COUNT
正式委托；指示
If someone gives you a brief, they officially give you responsibility for dealing with a particular thing.
例句
...customs officials with a brief to stop foreign porn coming into Britain.
受命阻止国外淫秽出版物流入英国的海关官员
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PHRASE
简短地
If you refer to something in brief, you are referring to a shortened version of it with few details.
例句
...and now sport in brief.
现在播报体育简讯
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PHRASE
简言之；总之
You can say in brief to indicate that you are about to say something in as few words as possible or to give a summary of what you have just said.
例句
In brief, take no risks.
总之，不能冒险。