Although describing the UI using UML has tremendous value inside the development team, the outcome can be difficult to use for customer validation.

虽然利用U ML描述UI在开发团队中有极大的意义，但是其结果对于客户验证会是困难的事情。

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You've got a few seconds to convince them that the site has enough value for them to keep using it, because if it doesn't, the visitors will leave.

你有几秒钟的时间说服访问者你的网站对他们有足够的价值，否则的话，他们就会走开。

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If you know that a book has at most one price element, you can write the query using XQuery value comparisons, which force the comparison operands to be singletons.

如果知道某个book至多有一个price元素，则可以使用XQuery的值比较来编写查询，这迫使进行比较的操作数是单个数。

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Even if that feature has no relevant value to 99% of the people using it.

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Using NYMEX futures, we calculate that MMR has zero equity value .

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Decisions regarding the stock appear to be made first based on the price action and then justification of the recommendation is made using the fundamental data that has shown to be of no value in predicting the moves of Apple stock in the very short-term.

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