Photographers employ it for decreasing contrast, saturating blues and reducing harsh reflections.

摄影者通常用它来降低对比度，增强饱和度，还有减少强的反射光。

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Under a cap-and-trade system, in contrast, aninvention that reduced the cost of cutting carbon emissions could itself pushdown the price of permits, reducing investors' returns.

相比来说，“限制排放与交易许可”机制在降低碳排放的成本的同时也得降低许可的价格和投资者的回报。

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Total outstanding debt has doubled in the past five years - a sharp contrast to consumers reducing what's owed on home loans and credit CARDS.

在过去的五年里，未偿还总债务也翻了一翻——与消费者在房贷和信用卡方面的减少形成鲜明的对比。

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"What we've proven to be useful and what does work is having a person in a stressed state, and then reducing that stress because it's that contrast is what motivates a person to cooperate, what motivates a person to start talking.

VOA: standard.2009.04.17

In contrast, reducing emissions of the sooty particles known as black carbon, which are given off by inefficient combustion in cooking fires and brick kilns, and by dodgy diesel engines, offers rapid, huge and tangible public-health benefits (see article).

ECONOMIST: Climate change

Reducing incoming sunlight, by contrast, is fraught with danger.

ECONOMIST: Geoengineering

In contrast to its Infiniti brand, the parent Renault company is reducing its official and visible presence in F1.

BBC: Red Bull get budget boost through Infiniti link-up