Steam power did not merely spin cotton and roll iron; early in the new century, it also multiplied ten times over the amount of paper that a single worker could produce in a day.

蒸汽动力不仅可以用于纺织棉花和轧铁；新世纪早期，蒸汽机的使用同样大大提高了造纸的效率，蒸汽动力一天所生产的纸张总量是单个工人一天生产纸张总量的10倍。

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In the art of origami, the artist would create a single animal or shape from a sheet of paper using precise folds and creases.

在折纸艺术中，艺术家会在一张纸上用精确的折叠和折痕来创造一个动物或形状。

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The second solution was for folding the paper in a single direction. This is the case when you try to fold a long narrow sheet of paper.

第二种方案是将纸按一个方向折叠，就是折叠一张长但窄的纸。

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It was also a single paper finding this effect, which may not be found by other researchers.

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Anyone who has ever tried mopping up an oil spill with a single paper towel will know how difficult it is to keep unsavory news from spreading through social media sites like Facebook and Twitter.

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Treasury Secretary Tim Geithner's tax troubles--a result, his handlers had said, of tax code complexity--underscore the need to drastically simplify that code with a flat tax, where a return can be filed on a single sheet of paper or even a postcard.

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