The magnified black white positive separation plates of the negative color film were made with an ordinary enlarger and the filters of red, green and blue.

其彩色负片分别用红、绿、蓝滤色镜及普通放大机分色放大，制成黑白正版。

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White said his team wanted to see whether living in greener urban areas had a lasting positive effect on people's sense of well-being or whether the effect also disappeared after a period of time.

怀特说，他的团队想知道生活在绿化较好的城市地区是否会对人们的幸福感产生持久的积极影响，还是说这种影响会在一段时间后就消失。

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White lie accomplishes some positive good or at least avoids some evil.

『善意的谎言完成某一正面好或至少避免某一罪恶』。

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Ronald White says the garden is a step toward positive change.

VOA: standard.2010.03.10

I mean, if you do the--If you look at the results for the study, it turns out that there is an association as bias to view white Americans as positive and African Americans as negative but it shows up in half a second difference.

如果你看这些研究的结果，你会发现人们有一种偏见,把白人和积极的意义联系在一起,把黑人与消极的意义联系在一起,你只有看这半秒的差别，才能发现这种偏见。

耶鲁公开课 - 心理学导论课程节选

John Coplans, on the other hand, chose Type 55 film (which yields a black-and-white positive and negative) in the 1980s to record his own stolid nude body in interlocking blocks of hairy flesh, self-portraits that owe something to Henry Moore and Philip Guston.

WSJ: The Polaroid SX-70 as Sexy Tech | Frances Lehman Loeb Art Center | By Richard B. Woodward

For many centuries, white has had positive connotations in Chinese culture and black negative ones.

BBC: A Point Of View: How China sees a multicultural world

Against this background, white complaints about positive discrimination can sound ridiculous.

ECONOMIST: Race in South Africa