During fusion, energy is released as atomic nuclei are forced together at high temperatures and pressures to form larger nuclei.

在聚变反应时，原子在高温高压的环境中聚变成大原子，这时能量会被释放出来。

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But accelerators could potentially produce nuclear fusion, which fuses atomic nuclei together.

而加速器可能产生核聚变，将原子核融合在一起。

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Nuclear fusion - the melding of atomic nuclei that happens inside stars - is a long-sought goal on Earth.

核聚变是发生在恒星内部的原子核融合，是地球上长期追求的目标。

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Acting alone, gravity would cause stars to collapse completely, but as long as energy is produced at their centers by nuclear fusion (the joining of atomic nuclei to form new elements, as in a hydrogen bomb), the star is heated and puffed up.

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This project, a collaboration between America, Russia, Japan and Europe, is intended to create sustained nuclear fusion by squeezing gases so hard that their atomic nuclei fuse together and give off more energy than was needed to squeeze them.

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The energy released by the fusion reactions then heats the surrounding fuel, within which atomic nuclei may further begin to fuse.

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