融合重氢同位素需要大量能量，部分原因是因为原子核带正电并相互排斥。

Fusing heavy hydrogen isotopes requires lots of energy, partly because the nuclei are positively charged and repel each other.

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扣带皮层部位接下来每秒钟活动的变化，也许与杏仁核的变化有关，因为扣带皮层部位控制着杏仁核。

Second-to-second changes in its activity might, though, be expected to be correlated with changes in the amygdalas, because of its role in regulating them.

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这些差别在两个区域特别明显：杏仁核和扣带皮层部位。

These differences were noticeable in two regions: the amygdalas and the perigenual anterior cingulate cortex (pACC).

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According to this theory, the atoms consist of a positively charged nucleus surrounded by a stream of electrons kept together by attractive forces from the nucleus.

根据这个理论，原子由一个带正电荷的核组成,由于来自核的吸引力,电子流围绕在核的周围。

麻省理工公开课 - 固态化学导论课程节选

And, it involves a single electron orbiting a positively charged nucleus.

包含了一个单独的电子轨道,一个带正电荷的核。

麻省理工公开课 - 固态化学导论课程节选