美国的GDP第三季度是有增长，但是只有年化增长率2%。

American GDP did grow in the third quarter, but only by an annualised 2%.

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在所有工业化国家里，美国的高中辍学率最高，有一半大学生未能完成学业。

We have one of the highest high school dropout rates of any industrialized nation. And half of the students who begin college never finish.

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有几种因素可能会使测量这些材料电阻率的工作复杂化，其中包括与材料实现良好接触的问题。

Several factors can complicate measuring the resistivity of these materials, including problems in making good contact with the material.

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