石墨是很好的减速剂，减慢中子并且让它们的反应保持在一个适当的温度范围内。

Graphite is a great moderator, slowing down the neutrons and keeping their reaction in the proper temperature range.

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但是，所有这个材料，这些横截面被测量的，是以能量的函数，它们是测量，中子能量的函数，那也是特定的媒介的，温度的函数。

But all this stuff, these cross sections are measured as a function of energy, they're measure as a function of the neutron energy which is a function of the temperature of the particular medium.

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这颗中子星产生时温度如此之高，其表面还在进行核子融合，从而产生了只有10厘米厚的碳大气层。

"This neutron star was born so hot that nuclear fusion happened on its surface, producing a carbon atmosphere just 10 centimetres thick."

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