The heat and light energy from the Sun is due to the fusion of hydrogen atoms at a very high temperature and pressure.

太阳的光能和热能是由于氢原子在极高的温度和压力下发生核聚变的缘故。

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Astronomers ascribed them to thermonuclear fusion of hydrogen or helium or to the sudden accretion of matter onto the star.

天文学家因此可将其归因于氢或氦的热核融合反应，或是有物质突然被星体吸附而产生的。

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On a biochemical level, a Carbohydrate is a simple fusion of carbon, hydrogen and oxygen molecules.

从生化角度讲，碳水化合物是一个含有碳，氢，氧元素的简单化合物。

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Since the late 1950s, U.K. scientists have been attempting to achieve the fusion of hydrogen nuclei (tritum and deuterium) using magnetic confinement (MCF).

FORBES: U.K. And U.S. Join Forces on Laser-Fusion Energy

In the Nature study, Brian Naranjo and colleagues, from the University of California-Los Angeles (UCLA), initiated fusion of heavy hydrogen, or deuterium, using the strong electric field generated in a pyroelectric crystal.

BBC: NEWS | Science/Nature | Table-top fusion 'demonstrated'

And it does not use hot fusion, the union of hydrogen atoms into larger elements that powers the sun and stars.

FORBES: NASA: A Nuclear Reactor To Replace Your Water Heater