We need a new look at the harnessing of scientific discoveries, to maximize their positive effects for the promotion of humanity as a whole and to minimize their negative effects.
我们需要用新的眼光来看待科学发现的利用，以最大限度地提高它们对促进全人类的积极影响，并最大限度地减少它们的负面影响。
Comparing with the system negative effects, those so-called positive effects is lack of institutional guarantee and produce a discontented effect.
与其不利影响相比，那些所谓的积极作用不仅缺少制度保障，也难以产生令人满意的效果。
The author ignores many positive effects of hiring native speakers as language instructors and negative effects of hiring non-native speakers.
作者忽略了雇用本土人教学积极一面的同时，也忘记了雇用非本土人教学的负面影响。
Therefore, the influence of alloy refine and modify is a result decided by both positive effects of delay of dendrite contact and negative effects of increase viscous force with solid-phase increased.
因此，细化变质对合金流动性的影响是延迟枝晶搭接的正面效应与增加固相分散度使粘滞力增加的负面效应相互作用的结果。
Therefore, the influence of alloy refine and modify is a result decided by both positive effects of delay of dendrite contact and negative effects of increase viscous force with solid-phase increased.
因此，细化变质对合金流动性的影响是延迟枝晶搭接的正面效应与增加固相分散度使粘滞力增加的负面效应相互作用的结果。
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