Alpha particles are positively charged helium nuclei obtained from natural radioactive decay.

粒子是从天然放射性蜕变得到的带正电的氦核。

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Light emitted from farther away, and thus older, quasars lacked this wavelength, because the light was getting absorbed by neutral helium as well as helium with a single ion-or charged particle.

光线的发射处越远，年龄越大，类星体的光谱会缺失，因为某些波长的光线会被中性氦及氦离子或带电粒子吸收。

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The solar wind is a high-speed but extremely tenuous stream of electrically charged gases—ionized hydrogen and helium—that flow outward from the sun.

太阳风是一种高速但非常稀薄的从太阳向外流动的带电气体离子氢、氦流。

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At such temperatures atoms are stripped down to their electrically charged components, so the helium created by fusion remains within the magnetic bottle.

ECONOMIST: Nuclear fusion

Helium nuclei are positively charged and thus easier to rein in using an electric field, in order to strip them of their energy.

ECONOMIST: A novel form of fusion power