Point the camera at a white background, and observe this phenomenon with a magnifying glass.

将相机对准白色背景，然后用放大镜观察这种现象。

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The name of the company is written in red on a white background.

公司的名称是用白底红字写的。

《牛津词典》

It's actually some black scratches on a white background.

其实不过是一些在白色背景上的黑色涂鸦。

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"She thought a Latina woman, someone with her background, would be a better judge than a guy like me, a white guy from South Carolina,"

VOA: standard.2009.05.31

" Black type on a plain white background simply says, "Use what you've got.

FORBES: MTV's Green Crusade

We see two men standing side by side in front of a featureless, white background.

NPR: Ad Report Card: Apple's Sour Mac Pitch

In another workshop, three fabricators were painting precisely measured round circles at regular intervals on a white background.

ECONOMIST: Damien Hirst