In fact, 24 per cent of our galaxy elemental mass consists of helium, which makes it the second most abundant element in our universe.

事实上，银河系中24%的元素质量是由氦组成的，这使它成为宇宙中第二丰富的元素。

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But the major ingredient of semiconductors is silicon, the second most abundant element on earth.

但是半导体的主要成分是硅，一种地球上含量第二丰富的元素。

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The Hiper project would use two lasers to produce power from seawater and lithium, an abundant element.

欧洲高功率激光能源计划(the Hiper project)将用两束激光发电，原料是海水和锂，后者是一种含量丰富的元素。

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Heleim is the 2nd most abundant element in the universe, but most of it is in places like the Sun.

FORBES: What Great Helium Shortage?

Nitrogen is by far the most abundant element in the Earth's atmosphere but most of it stays aloof in a form which living things can't use.

BBC: Leaving our mark: Fossils of the future

Carbon could also be used as a fuel, NASA scientists speculate, and the process would turn the carbon into nitrogen, the most abundant element in the atmosphere.

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