This seems to be the best reference on which to build a textbook, since it is a standard on the subject and covers what most U.S. history students study in high school and college.

编写一本教科书，这似乎是最好的参考书，因为它是这个主题的标准，而且覆盖了高中生和大学生所学的大多美国历史课。

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It means that, for the first time, the majority of mothers are having the number of children they want, which seems to be—as best one can judge—two.

它意味着，大多数妈妈终于可以按照她们自己的意愿选择生育几个孩子。 从我们所了解的情况看，两个孩子似乎是她们理想的数目。

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One of the best solutions to the drawbacks, therefore, seems to be microbes, which are perfect little factories because they can be engineered to perform practically any chemical reaction.

因此，解决这个问题的最好方法之一，只有利用微生物了。微生物就是一座座完美无缺的微型工厂，如果经过合理设计，所有的化学反应过程都可以在微生物细胞内进行。

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No doubt the world needs a formidable lender of last resort, for which the IMF seems best suited.

CNN: Bright Ideas

That way, they could decide which of several cosmological theories, each of which now seems equally plausible, was best supported by the evidence.

ECONOMIST: Radio telescopes

Given the proposed wording of the rule and the apparent nature of the trade, which seems to have started out as an attempt to hedge risk, that assertion is at best a stretch.

ECONOMIST: A scramble to benefit from a bad trade