实现这些目标从理论上说比较容易，但在实践上却相当困难。
Achieving these goals is relatively easy in theory, yet quite difficult in practice.
从理论上讲，这些机器应能用十年以上。
In theory, these machines should last for ten years or more.
从理论上讲，他们的国家是一个多党派民主国家。
从理论上讲，人们应该做出“健康的选择”，避免暴饮暴食。
Theoretically, people ought to make "healthy choices" and avoid overeating.
从理论上讲，您认为每件文物都具有潜在的科学价值可能是正确的。
Theoretically, you may be correct in claiming that every artifact has potential scientific value.
从理论上看没有需要担心的理由。
从理论上讲，理论与实践之间没有不同。
In theory, there is no difference between theory and practice.
教授从理论上推测了地球的年龄。
2从理论上讲，每个人都可以接受教育。
从理论上讲，他们属于同一种动物。
从理论上讲，每个人拥有相等的权利。
从理论上讲，国会应该是美国的一个缩影。
In theory, Congress is supposed to represent a microcosm of America.
本文从理论上分析了该方法的适用条件。
The preconditions for application of this method are discussed.
从理论上讲宇宙是无限的。
至少从理论上是这样的。
从理论上和实践上说，人是可以被克隆的。
没有人能够使用证书或者模仿您，至少从理论上是这样。
No one else can use certificates or impersonate yours, at least in theory.
从理论上讲你是对的，不过这很难付诸实施。
Theoretically you're right, but it's difficult to put it into practice.
这从理论上看似乎是对的，但在实际中行不通。
It looks all right in theory, but it will not work in practice.
从理论上讲，在市场上发行可转换债券是好的。
In theory, to issue exchangeable bonds on the market is good.
从理论上讲，标记将帮助更多的人找到更多的文档。
从理论上讲，Eclipse支持的所有语言，我们都能支持。
In theory, any language that is well-supported by Eclipse we could support.
从理论上讲，加州理工学院的RNA设备像普通计算机一样运转。
The Caltech RNA device operates much like a normal computer, in theory.
从理论上讲，这个问题不应该发生，但实际它却发生了。
In theory, this problem should not occur, but in reality it does.
从理论上讲，你可以把户口从一个地方迁到另一个地方。
In theory you can transfer your hukou from one place to another.
从理论上讲，你可以把户口从一个地方迁到另一个地方。
In theory you can transfer your hukou from one place to another.
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