The beavers were hunted a lot, overhunted, they are almost extinct by the 1800s, that meant fewer wetlands, less standing water.

海狸被大量捕杀、过度捕杀，到19世纪它们几乎灭绝了，这意味着湿地和静水变得更少了。

youdao

The zones do deliver some improvements to air quality, and the science tells us that means real health benefits—fewer heart attacks, strokes and premature births, less cancer, dementia and asthma.

这些区域确实改善了空气质量，而且科学表明，这意味着切实的健康收益——心脏病、中风和早产发病率降低，癌症、痴呆和哮喘等疾病的减少。

youdao

The interracial roommates spent less time together, and had fewer joint activities than the white pairs.

不同种族的室友在一起的时间更少，共同参与的活动也比白人组合少。

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The researchers knew it would be easier and less costly to map a smaller frog with fewer chromosomal pairs.

VOA: special.2010.06.29

The government believed it would cost less money and fewer lives to keep Indians on reservations.

VOA: special.2010.04.01

The South had much less industry and fewer railroads.

VOA: special.2009.08.27

Payday loan companies justify the charges by noting that they are serving a riskier part of the population, with less documentation and fewer ties to the community.

FORBES: Google-Style Money for America's Poor

Since then, the Seychelles has been at the forefront of the global fight against piracy but the new rules mean fewer fish and less money.

CNN: Seychelles' gunboats keep pirates from 'blue gold'

And the result is less fuel and fewer emissions for the same amount of electricity generated.

FORBES: Siemens Announces Initiative to Improve Power Generator Efficiency With Superconductors