The second effect was “range reduction”: In mathematical terms, correct answers became clustered at the group's edges.

第二个因素是“范围缩小“：用数学术语讲，正确的答案集中在群的边缘。

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The fish species in question, however, migrate between these two areas, so the question was how much the reduction of fishing effort in part of their range would affect their Numbers.

但是，由于作为研究对象的鱼类洄游于上述两个海域之间，于是问题也就产生了：捕鱼活动在部分海域的减少，对鱼类数目的影响究竟有多大。

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Specifically, Mayo brings up the reduction in Citi’s capital expenditures from a range of $3 billion to $4 billion in 2004 to 2007 to $2 billion in 2008 and $1 billion in 2009.

梅奥特别提出，花旗集团的资本支出从2004年至2007年的30亿美元至40亿美元减少到2008年的20亿美元和2009年的10亿美元。

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EVs are attractive to DOD for a range of reasons, including reduction of greenhouse gas emissions, enhanced energy security, and the ability to retain power during a crisis by pairing EVs with microgrids, said Gorguinpour.

FORBES: The Cash-Back Car: Monetizing Electric Vehicles

We have, I think you know, have put an aggressive range on the table for a reduction in carbon dioxides from our economy.

WHITEHOUSE: Press Briefing

The EEA report identified a range of factors that contributed to the reduction during 2008, including less demand for power as economic activity slowed.

BBC: EU 'half way to 2020 emissions target'