The other alternatives are attractive in theory but in practice are either impractical or offer only marginal improvements.
其他替代方案在理论上很有吸引力，但在实践中要么不切实际，要么只能提供微不足道的改进。
Prisoners have legal rights, but in practice these rights are not always respected.
囚犯虽有合法的权利，但实际上这些权利常未受到尊重。
But in practice what happens is the team hates filling out data for use by other people.
但实际出现的是，团队痛恨填写为其他人所用的数据。
This warning looks a bit alarming, but in practice, the extension seems to be well-supported.
警告看起来有点让人担心，但实际上这个扩展似乎得到了很好的支持。
This seemingly great idea guarantees unlimited portability, but in practice it does not deliver.
这个表面上很棒的想法保证了不受限制的可移植性，但实际上它并没有实现。
But in practice this does not really make things easier, says Peter Merrill of PricewaterhouseCoopers.
普华永道会计师事务所的彼得。美林称，实际上，这个方法收效甚微。
But in practice companies in similar industries often end up clustering together in the same location.
但实际上，同一产业的公司常常最后都集中到一个地方。
The Fed by law must emphasise employment and inflation equally, but in practice it, too, targets inflation.
根据法律，美联储必须给与就业和通胀同样的重视，但实际操作上美联储也主要以控制通胀为目标。
This example includes only one elif statement, but in practice you can include as many as the program needs.
本例只包含一个elif语句，而实际中可根据程序需要包含任意多个。
But in practice, people make dismal financial decision for a host of reasons, Dholakia explained, including.
Dholaka解释说，在现实生活中，人们做出错误的金融决策有多方面原因，其中包括。
In an abstract sense, these database concepts may seem confusing, but in practice they're fairly straightforward.
从抽象意义上来说，这些数据库概念看起来可能让人混淆。但在实践上，它们相当简单。
It is interesting as an exercise, but in practice the one-liner would become 20-30 lines of unnecessary code.
作为练习这会很有趣，但是实际上一行程序可能会变成20 - 30行不必要的代码。
It looks neat in the briefing rooms but in practice is a messy, ambiguous business fraught with moral dilemmas.
简令下达室看起来很整洁，但一到工作时就一团糟，模棱两可的买卖中充满了道德上的进退维谷。
But in practice, he said: "Our sales team responded a lot differently to the robot than they did to the speakerphone."
而在实践中，他说，“我们的销售团队回应机器人的方式远远不同于他们回应扬声电话。”
But in practice, countries are reluctant to do so, fearful that an excessively strong currency will hurt their exporters.
但在实践中，各国都不愿意这样做，担心货币过度强势会影响出口。
It should all work fine in theory. But in practice the guardians of Internet security seem badly to need guarding themselves.
这套程序在理论上没有问题，但实践中这些网络卫士看样子非常需要先保护好他们自己。
At a high level this mapping is fairly straightforward, but in practice every project ends up with a slightly different model.
在高层次上，这种映射十分直接，但在实际中，每个项目都采用稍微不同的模型。
Silverstein can in theory press ahead with the building of the Rogers and Foster towers, but in practice he is out of cash.
Silverstein理论上是先建造罗杰斯和福斯特的塔楼的，但是实际上他面临现金流短缺的问题。
Wikitude Drive has only been officially supported on a handful of phones, but in practice it works on most Android devices.
Wikitude Drive仅在少量的手机上得到官方支持，但实际上它在大部分的Android设备上运作。
But in practice the average family has not seen such a gain because much of it has gone to those at the top or into profits.
但实际上，一般的美国家庭并没有看到这项收入。这是因为其中很大一部分被那些处于收入顶层的获得或者变成了利润。
But in practice America's regulatory approach has left much of the country with a cable monopoly for truly fast broadband access.
但在实践中，美国的管制方式已经把国家大部分地区交给了一个电缆垄断以获得真正快速的宽带接入。
Paying into the public scheme should, in theory, mean that foreigners get something back. But in practice, that may be tricky.
从理论上来看，参与公共计划意味着外籍人士会有所得，但是实际上，这可能会有猫腻。
CDATA sections are allowed anywhere in XHTML (as they would be in any XML application) but in practice they're completely ignored.
CDATA区域可以出现在XHTML中的任意位置(就像在任何XML应用程序中一样)，但在实践中，这些CDATA区域通常会被忽略。
Atom (see my recent article on the topic) was an attempt at a fresh start for RSS, but in practice it just adds another option.
Atom(请参阅我最近撰写的相关文章)本来希望给RSS一个全新的面貌，但实际上仅仅增加了一种选择。
People can always make heaps that are difficult to collect in parallel, but in practice most large heaps have ample parallelism.
人们总是把堆搞得难以并发收集，但实际上大多数大型堆有足够的并发性。
In a recent book, he says there are "not many ideas that have the potential to matter more for good, not only in theory but in practice."
他在最近出的一本书中说，“能永远都重要的思想不多，不但在理论上是这样，实践也是如此。”
In this scenario, the architecture will be implemented with some degree of "truth" or correctness, but in practice, it won't be perfect.
在这一场景中，架构将由一些“真实性”或者正确性的程度来实现，但实际上，那将不是完美的。
A complex system could have more than one level of decomposition in the context model level, but in practice there is generally only one.
一个复杂的系统在上下文模型层级中拥有不止一种的分解层级，但是在实践中，通常只有一种。
In theory, this sounds great, but in practice, such services are often wrought with controversy. Just a few of many unanswered questions are.
表面看上去确实不错，可是在实践上，这些服务常常引发很多争议。
In theory, this sounds great, but in practice, such services are often wrought with controversy. Just a few of many unanswered questions are.
表面看上去确实不错，可是在实践上，这些服务常常引发很多争议。
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