An increasing number of experts believe that network will exert positive effects on people's rich and colorful life.

越来越多的专家相信网络对人们生活丰富多彩起到积极作用。

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For long years, we have obtained a lot of experience in industry that will exert positive and obvious influence on our costumer's seeking maximum benefit.

多年以来，在工业领域多方面的经验使我们取得了一系列的进步并对我们客户的利益产生了积极显著的影响。

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To offer better civil education, we need to exert positive influence from the society, try to build up the needed social and cultural environment for civil education.

我国加强公民教育需要积极发挥社会各方面因素对公民教育的正面影响，努力营造公民教育所需要的社会文化环境。

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It says, if you pull it to the right, so that x is positive, the spring will exert a force which is in the negative direction; that's why you have a minus sign.

就是说,如果你向右拉,x 取正值,弹簧产生的力方向为负,这就是这里用负号的原因

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