Hydrogen is the lightest element.

氢是最轻的元素.

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The hydrogen is the known the lightest element.

氢是已知的最轻的元素.

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The lightest element is hydrogen.

最轻的元素是氢.

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Hydrogen is the lightest element with an atomic weight of 1.008.

氢是最轻的元素,原子量为1.008.

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But hydrogen is difficult to store because it is the lightest element.

但是,储存氢气很困难,这是因为氢气是最轻的元素.

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It is generally known that Hydrogen is the lightest element.

大家都知道,氢是最轻的元素.

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Hydrogen is the lightest element in nature.

氢是自然界中最轻元素.

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