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。
The other alternatives are attractive in theory but in practice are either impractical or offer only marginal improvements.
墨西哥的政府机构在理论上是转变了，但只有墨西哥人的态度也发生改变，美好的明天才会来临。
Mexico’s institutions have been transformed in theory, but a better ma?ana will never dawn unless Mexican attitudes change too.
这缆绳在理论上可以伸展6万英里远的空间。
The cable would in theory have to stretch as far as 60, 000 miles into space.
性能调整在理论上是一项迭代任务。
至少在理论上，RIM应该能够抵挡住这个入侵者。
In theory at least, RIM should have no problem fending off the interloper.
这在理论上意味着15%的美国人有活到100岁的倾向。
That means, in theory, 15 percent of the American population is predisposed to live to be 100.
这在理论上听上去有点道理，不过，它并不足以说服每个人。
It sounds sensible, in theory. But not everyone is convinced.
上面的表和图给出的是动态压缩在理论上的性能结果。
The above table and graph illustrate the theoretical savings of using dynamic compression.
混入一些微量合金后，金币在理论上能贮藏几万年的时间。
Mixed with a small amount of alloy, gold COINS have literally been able to last for thousands of years.
在理论上，这是一个非常完美的理想，然后要在现实中实施并非易事。
It's a great idea in theory, but not so easy to implement in the real world.
这是他工作的信条，设计漂亮但实用并因而(在理论上)卓越的产品。
It's the creed of his field of work, to design things that are beautiful yet functional and that are thus, in theory, superior products.
这种科研方法在理论上能被用于单独储存许多不同颜色的光束。
This technique could, in principle, be used to store light of many colours separately.
制造氧气和让火星拥有可供呼吸的空气至少在理论上是可行的。
Making oxygen and giving Mars a breathable atmosphere is at least theoretically possible.
碰撞有可能发生在理论上存在的两个“原月亮”冷却的最后阶段。
The collision would have taken place during the late stages of the theoretical proto-moons' cooling process.
第一个问题，也是比较简单的问题，就是在理论上最佳的XML表示是什么。
The first, and simpler, issue is exactly what the best XML representation would be in the abstract.
这种方法在理论上没有问题，并且可以利用现有的系统工具实现。
The technique is aesthetically elegant and utilizes existing system tools.
这一公约在理论上是非常好的：这意味着在儿童被带走前，要进行合法地努力。
That is fine in theory: it means that legal battles have to be fought first, before a child is moved.
其他类型的公共成员声明是可见的，因此在理论上可能增加目标类型的复杂性。
Public members declared on other types are visible so they can add to the theoretical complexity of the target type.
在理论上，共同基金是一个很好的想法，但在现实中，它并不总是能如愿以偿。
Mutual funds are an excellent idea in theory, but, in reality, they haven't always delivered.
如果爱情是类似地基于生化反应，那么在理论上你应该可以用同样的方式来抑制。
If love is similarly biochemically based, you should in theory be able to suppress it in a similar way.
这样的“内部贬值”在理论上是可行的，但在实际中并不常见（并且是痛苦的）。
Such an “internal devaluation” is possible in theory, but it is unusual (and painful) in practice.
我们谈论了很多科幻小说罢了，但在理论上没有什么能阻止你要出去（倒太空间）。
We're talking a bit of science fiction now, but in theory there's nothing that stops you going out (into space).
线程是同一程序的执行片段，并且在理论上，允许我们同时执行程序中的不同操作。
Threads are segments of execution for the same program and, in theory, allow us to simultaneously execute different operations in the program simultaneously.
在理论上这是非常有趣的，而且具有一定的艺术性，但是它并不特别实用。
This is academically very interesting and it has a certain aesthetic appeal, but it's not particularly useful.
在理论上这是非常有趣的，而且具有一定的艺术性，但是它并不特别实用。
This is academically very interesting and it has a certain aesthetic appeal, but it's not particularly useful.
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