Because neutrinos are tiny and electrically neutral, they can travel across the universe without interference, bringing with them information about their distant astrophysical sources.

由于中微子很小，又是电中性的，它们可以在宇宙中穿行到很远的地方而不受干扰，这就为天体物理学家带来了一些来自遥远天体的信息。

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By then the universe had cooled down enough for neutral atoms to form, at last allowing radiation to travel unimpeded.

到那时，宇宙已经充分冷却中性原子形成，最后让辐射出行畅通。

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He started Wild Guanabana, which was the Middle East's first carbon neutral travel company.

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It seems more likely that the Australian Cricket Board will only allow their players to travel if the games take place at a neutral venue.

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