它们从小湖的几天到大湖的几百年不等；加州的太浩湖有700年的滞留时间。

They range from a few days for small lakes up to several hundred years for large ones; Lake Tahoe, in California, has a residence time of 700 years.

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受试者的婚龄从两年到19年不等。

Participants had been married from two years to 19 years.

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为了增加政策稳定性，它把各类税务优惠延长到了3至8年不等。

To impose stability, it extends a variety of tax credits by anywhere from three to eight years.

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