Few of those left behind are home alone - most are left in the custody of grandparents - but the separation from their parents will inevitably affect their development in less-than-positive ways.

除了极少数独守家中，大部分留守儿童有他们的祖父母监护，但是远离父母仍将不可避免地对他们的成长产生诸多消极的影响。

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The results show that a positive bowed blade can restrain the corner separation and change the separation configuration, while it can not avoid the flow separation on the suction surface.

结果表明，正弯可以有效遏止角区分离，改变吸力面的分离形态，但不能完全消除吸力面的分离。

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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。

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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

Often a good thing to start with is to put the lowest ionization energy atom in the middle, and if you don't have charge separation then go with that structure, but if you do find you have a lot of separation, such as the case in negative 2, positive 2, and minus 1, then you want to say wait a second, this is really bad in terms of formal charge, let me go ahead and see what other options I have here.

通常一开始把电离能最低的原子,放在中心位置就很好了，如果你发现电荷没有分开,那么这个结构就没问题了，但是如果你发现有很多分开的电荷，比如这种情况，有负二，正二和负一，那么你会想要说等一下，从形式电荷来看这很不好，让我去看看其它可能的选择。

麻省理工公开课 - 化学原理课程节选