尽管美国在追求这个理想时常常达不到要求，但是这样一幅公立教育的画面却引人入胜。

That vision of public education is a compelling one, although America has often fallen short in its pursuit of the ideal.

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很多时候，我们过于担心锻炼的次数达不到理想的标准，因而完全停止锻炼。

Too often, we worry so much about getting the perfect amount of exercise in that we end up getting no exercise at all.

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然而，正如西蒙的有限理性原则所明确阐明的，由于受时间、信息和智力的限制，这种理想的要求是永远达不到的。

As Simons principle of bounded rationality makes clear, however, such an ideal rationality can never be attained because of the limits of time, information, and intellectual capacity.

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