Most things are balanced - with equal numbers of electrons and protons.

大部分物体都是电荷平衡的——含等量的电子和质子。

《柯林斯英汉双解大词典》

For decades physicists had been building up their theory of matter entirely in terms of electrons and protons.

几十年以来，物理学家已经以电子和质子为基础建立起他们的物质理论。

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When atoms were first proved to exist (and that was a mere century ago), they were thought to be made only of electrons and protons.

就在一个世纪前当原子首次被发现时，我们当时认为它只是由电子和质子组成的。

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On one side of the membrane, hydrogen is decomposed into its constituent electrons and protons.

ECONOMIST: Fuel cells hit the road | The

Well, we still don't quite understand the exact nature of dark matter, but highly precise measurements of positron fraction (the ratio of positrons to electrons and protons) do bring us a small step closer to proving the existence of the theoretical material.

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The Sun's magnetic field and solar wind - mainly in the form of electrons and protons coming out of the Sun - protects the entire Solar System by acting as a sort of shield from cosmic rays (very energetic particles and radiation from outer space).

BBC: Viewpoint: The Sun and climate change