Afghans gave a more positive assessment of their economic situation than in previous years and both a majority of urban and rural residents say they are more prosperous today than they were under the Taliban.

VOA: standard.2009.10.27

both positive and negative in a variety of situations.

正面和负面，各种语境中。

I wish 课堂 - SpeakingMax英语口语达人

Both Langer and Stone were my physicist advisors, introduced me to the field of positive psychology into this research.

两位都是我的物理学导师，带我进入了积极心理学领域的研究。

哈佛公开课 - 幸福课课程节选

And it turns out that when you constructively have two p orbitals interfere, and when I say constructively, I mean they're both either positive or they're both the negative lobes, that's when you got bonding.

当两个ｐ轨道,相长干涉时，我说的相干相长，意思就是说它们要么都是,正的叶瓣要么都是负的叶瓣，这时就能成键。

麻省理工公开课 - 化学原理课程节选

So holiness entails necessarily separation in both its positive and negative aspects.

因此“神圣“在正反两面,都造成了物体之间的区别和不同。

耶鲁公开课 - 旧约导论课程节选

And there is this separation which is a balance of attractive forces because the chloride is net negative and the sodium is net positive, but both of them, regardless of net charge, have electrons.

这里有一个平衡,引力的平衡,由于氯离子带有负的净电荷,钠离子带有正的净电荷，但是它们两个，没有考虑净电荷，电子。

麻省理工公开课 - 固态化学导论课程节选

So, what this means is that when we're looking at an actual wave function, we're treating it as a wave, right, so waves can have both magnitude, but they can also have a direction, so they can be either positive or negative.

这意味着,当我们看一个波函数时,我们把它看做一个波，波不仅有幅值，还有方向，所以它们可正可负，如果。

麻省理工公开课 - 化学原理课程节选