Letters of intent, however, normally state the basic terms of an agreement, but leave the finer details for later.

意向书往往对协议的基本条款进行说明，但具体细节要留待将来再进一步完善。

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There are three basic types of written agreements, depending on the language of the agreement: agreements to agree, letters of intent, and a fully defined, binding agreement.

按照协议用语，书面协议分为三个基本类型：协议将来达成协议（agreement to agree）、协议意向书、以及说明详细且具备约束力的协议。

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Why were the companies which won licences allowed to sell significant equity shortly after being given Letters of Intent (LoI) resulting in trading of spectrum, an illegal act?

为什么那些赢得牌照的公司在获得电信频率销售意向书后不久，就被充许出售大量股权？这是非法之举么？

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Congratulations, you young athletes who faxed your letters of intent to your college football destination of choice on National Signing Day!

FORBES: My Congratulatory Message To The National Signing Day Youth

Having refined and validated its design, it began accepting letters of intent for its first 40 planes in the last few weeks of 2007.

ECONOMIST: Business jets

The new agreement with the IMF also said the Indonesian government would take the initiative as to the contents of future draft letters of intent rather than the IMF as before.

BBC: Indonesia signs new IMF deal