"There can be no identification without contrast." Judicial control of juvenile crime is not a new thing throughout human history, scanning widely whole world.

“有比较才有鉴别”，纵观人类历史长河，放眼全球，少年罪错司法防治并非新事物。

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In contrast, the recent surge in world grain prices is trend-driven, making it unlikely to reverse without a reversal in the trends themselves.

相比之下，最近的世界粮食价格上涨是由趋势造成的，除非趋势本身得以逆转，否则这种上涨是不可逆的。

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In contrast, when juvenile lobsters were reared in a smooth tank without the oyster chips, the majority developed two cutter claws.

相比之下，当幼龙虾在没有牡蛎片的光滑鱼缸中饲养时，大多数都发育出了两个刀爪。

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True to its name, the IntelliBright algorithms have the ability to intelligently analyze image content real-time and create brighter, higher contrast images without raising net power consumption.

ENGADGET: DLP's IntelliBright tech promises brighter pico projection at no extra power

Without busting out the contrast spectrometer to test Amazon's claim, I'm going to go with what I can see, and when compared to my last-generation Kindle, it's clear Amazon has indeed increased the contrast of the screen.

CNN: Review: Kindle Paperwhite is king of the e-readers

The Republican reformers, by contrast, promise reform without higher taxes, in part by confronting the unions.

ECONOMIST: Conservative education reform