The small number of founders restricted how much variation there was to begin with, so it’s not surprising that today’s Swedish beavers show remarkably little genetic variation.

可想而知，如此小的基数限制了多少变异，所以今天瑞典的海狸几乎没有显示多少变异。

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The variation of R wave amplitude has little relation with cardiac output, heart pumping function, especially with pulmonary wedge pressure.

波振幅的改变与心输出量及心脏的泵血功能，尤其是肺动脉楔压之间无明显关系。

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For the west of Northwest China, analysis suggests that precipitation decreased a little, but with no obvious variation trend.

中国西北地区降水总体偏少，但没有明显的变化趋势。

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From that first transaction, when shells were the reserve currency, to about 1995AD, the marketplace dance was performed zillions of times with little variation.

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The old rumors surrounding Apple-branded personal digital assistants and mobile phones have resurfaced, with little new variation.

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The next is that this variation has little to do with things you might suppose would explain it: class sizes, hours of study per subject, and spending per pupil.

ECONOMIST: Education and the wealth of nations