It is believed that nitrogen complex irradiation defects to form complexes, which enhance oxygen precipitation.

这是辐照缺陷及其相关复合体对氧沉淀形核过程起了加速作用的结果。

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It is mostly made of ionized hydrogen and helium, though carbon, oxygen, nitrogen and other atoms are present, producing the complex color blend visible here.

它主要由电离氢分子和氦构成，同时还包括碳、氧、氮和其他原子，使得其呈现纷繁的混合色彩。

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Within that mix, the hydrogen atoms form connections that function like hooks, onto which carbon or nitrogen atoms can presumably grab to form the beginnings of complex organic molecules.

在那样的混合体中，氢分子的连接具备了挂钩(hook)的功能，碳原子或氮原子可以抓住这个挂钩，以形成复杂生物分子的起始部分。

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Paclitaxel comes from the Pacific yew, a small, slow-growing fir found in small pockets in the Pacific Northwest. (Docetaxel comes from the European yew.) Devising a synthetic version is difficult because the chemical is exceedingly complex, marked by concentric rings of carbon, hydrogen, nitrogen and oxygen.

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