The larger animals require less food per unit mass, more efficiently storing carbon than smaller animals.

较大的动物每单位质量需要的食物较少，却能比小型动物更有效地储存碳。

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If less hot air seeps in, and less cooled air seeps out- the less work your unit has to do to keep the temperature regulated!

如果漏进来的热风越少，漏出去的冷风也越少，那你的空调就不需要那么“努力工作”来让房间的温度保持在某个水平上了。

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Promises to emit "notably" less CO2 per unit of GDP by 2020

承诺到2020年时显著降低每单位GDP的排放量

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Nokia maintained the top spot in the overall mobile phone market despite year-over-year unit shipment growth of less than 2% in new chief executive Steven Elop's first quarter at the helm.

ENGADGET: IDC: Apple passes RIM to become fourth largest mobile phone vendor globally as Nokia, LG, and Sony Ericsson struggle

Between 2001 and 2010 Italy's unit-wage costs soared and its economy grew by less than any other country in the world, except Haiti and Zimbabwe.

ECONOMIST: Italy and the euro zone

The Cincinnati tax-exempt determinations unit, which employees refer to as "determs, " is considered by employees one of the less-attractive IRS posts.

WSJ: IRS Division in Dispute Followed Own Course