16. Repeat yourself only when repetition is necessary to improve clarity. Ambiguity is created by saying the same thing more than once; it is almost impossible to say it twice without creating ambiguity. Only if the concept is a difficult one should you write it in more than one way. In addition, if you use an example to clarify a difficult concept or formula, be sure that all possible meanings are considered and that the example is accurate and consistent with the concept as worded.

　　除非是为了更清晰地说明问题，否则不要在合同中重复陈述某个内容。将一个事实来回地说很容易让人模棱两可。如果你将一个概念重复地解释，那理解起来就更有困难。另外，如果你想通过一个例子来阐明一个难以理解的概念或规则时，一定要考虑到其所有的含义、这个例子的准确性以及它和概念的相符性。

　　17. Title it "Contract." Do not leave this one to chance. If your client wants a contract, call it a contract. A judge now sitting on the federal bench once ruled that a document entitled "Proposal" was not a contract even though signed by both parties. The lesson learned is, "Say what you mean." If you intend the document to be a legally binding contract, use the word "Contract" in the title.

　　标题上注明"合同"两字。不要为碰运气而忽略这个。如果你的客户需要合同，就要注明是合同。一个仍在联邦法院里任职的法官就曾经裁定：有双方签字，但标有"建议书"的文件并非合同。这给我们的教训就是，你怎么想，就应该怎么说。如果你想让你的文件成为具有法律效力的合同，就要在标题中注明"合同"字样。

　　18. Write in short sentences. Short sentences are easier to understand than long ones.

　　写短句子，因为短句子比长句子让人更容易理解。

　　19. Write in active tense, rather than passive. Active tense sentences are shorter and use words more efficiently, and their meaning is more apparent. Example of active: "Sellers shall sell the Property to Buyer." Example of passive: "The Property shall be sold to Buyer by Seller."

　　用主动语态而不用被动语态。相对而言，主动语态的句子更简短，措词更精练，表达更明白。还是让我们来来看一个例子吧，主动语态的句子：卖方将把此物卖给买方;被动语态的句子：此物将被卖方卖给买方。

　　20. Don’t use the word "biweekly." It has two meanings: twice a week and every other week. The same applies to "bimonthly." Instead, write "every other week" or "twice a week."

　　不要用“双周”之类的词，因为这有可能产生歧义----是两周还是每隔一周?类似的词还有"双月",所以最好这样写:"两周"或"每隔一周"。