Feng Xin: Apart from negative influence, do the media exert any positive influence?

冯欣：那媒体除了负面的影响以外，有正面的影响吗？

youdao

Finally, elicit the following proposals:education mothers to avoid the negative effects, while exert father's positive effects;

最后提出了对策建议：教育母亲以避免母亲的负面作用，同时发挥父亲的积极作用；

youdao

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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