You have to put a deep red filter on the lens to increase the contrast.

你还需要在镜头上加一块深红色的滤光镜来提高反差。

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Increase the contrast using the Curves to emphasise the highlights and creased lines.

增加使用曲线的对比，强调的重点和折痕线。

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Polarizers can also increase the contrast of a photograph because they can remove reflection.

偏光片还可以增加照片对比，因为他们可以消除反射。

youdao

Both guys are keenly aware of the areas where the prototype needs improvement, and insist that the LTE-packing YotaPhone will soon get a new case to house the double Gorilla Glass screens, an improved power button (which also doubles up as the SIM slot), and very likely a superior E Ink panel that will increase the resolution to 220 dpi and also improve the contrast.

ENGADGET: YotaPhone Android prototype with dual LCD and E Ink displays hands-on (video)

This latest monthly increase was in contrast to the fall across the UK as a whole.

BBC: Unemployment: Mixed picture for NI jobless figures

Real nonresidential fixed investment decreased 1.3 percent in the third quarter, in contrast to an increase of 3.6 percent in the second.

FORBES: U.S. GDP At 2%, Economy Continues On Treadmill