It helps that natural history looks good in high-definition and in three dimensions.

这有助于博物学在高清晰度和三方面看起来不错。

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Good high schools can cost $3,000 for three years, and a high-school-age laborer can earn $150 a month; that’s a cost differential of about $8,400—a fortune for poor peasant families.

在好的高中上3年学，可花去3000美元，而高中适龄劳动者可以赚取每月150元，这是一个约8,400元的成本差异，这对贫苦农民家庭是一笔不小的数目。

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Among the three-phase power-factor correction circuits, the full decoupling circuit is especially suitable for high power fields because of its high input power and good electrical performance.

在三相功率因数校正电路中，全解耦型电路由于其输入功率大，电气性能较好等优势特别适用于大功率场合。

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His progress, on and off the course, was so good that Paula decided to extend the scholarship through the rest of high school -- another three years.

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