Talbot's "calotype" was the first negative-to-positive process and the direct ancestor of the modern photograph.

塔尔博特的“卡罗式摄影法”是第一种用负片洗印正片的方法，这种方法是现代摄影技术的直系鼻祖。

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The media environment is an important factor to influence the moral education, but the reception of that influence is a positive process rather than a negative, passive one.

媒介环境是影响德育的一个重要因素，但德育在接受媒介环境的影响时不是消极的、被动的，而是一个积极的能动过程。

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The new study illustrates how simple it would be for companies to control reviews of their products by simply adding a few positive ratings of their own early reviews in the process.

这项新的研究表明，企业要对其产品进行评控是多么简单，他们只需要在早期自行发表一些积极的评论即可。

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"We have received positive indications and we are hopeful that we are about to start now a process of negotiation."

VOA: standard.2010.05.03

That's an example of a process called positive feedback.

这个过程叫做正反馈

耶鲁公开课 - 生物医学工程探索课程节选

Attempting to retard this positive evolutionary process by stop-gap measures such as the present trade agreement with a reconfigured union will probably only result in increased estrangement and desperation on the part of the most independent republics.

CENTERFORSECURITYPOLICY: Center for Security Policy | Gaffney To Congress: Vote For ��Tallinn Process,�� Not Moscow Center��s ��Common Economic Space��

Japan and the United States welcome all regional partners to make positive contributions to this process.

WHITEHOUSE: The White House

The fact that they have said they are beginning that process is positive.

WHITEHOUSE: President Obama & President Medvedev Joint Press Conference | The White House