Nowhere in nature is aluminum found free, owing to its always being combined with other elements.

由于铝总是和其他元素结合在一起，所以在自然界中找不到游离的铝。

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Nowhere in nature is aluminum found free, owing to its always being combined with other elements, most commonly with oxygen.

由于铝总是和其他元素结合在一起，最常见的是和氧结合，所以在自然界中找不到游离的铝。

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Nowhere in nature is aluminum found free, owing to its always being combined with other elements, most commonly with oxygen.

由于铝总是和其他元素结合在一起，最常见的是和氧结合，所以在自然界中找不到游离的铝。

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And, at the other extreme, we have elements with very high value, elements with high average valence electron energy.

另外，在另一端，我们有原子序数较大的元素，这些元素有着较高的平均化合价和电子能。

麻省理工公开课 - 固态化学导论课程节选

And up in the other extreme are elements with very high average valence electron energy.

和那些特别元素,它们具有很好的平均价电子能。

麻省理工公开课 - 固态化学导论课程节选

And his structural device that he mingles with the romance, on the one hand, and the flurry of the elements of thriller on the other hand.

在一方面，他融合了结构要素和,浪漫，另一方面，带有,惊悚片激动的元素。

麻省理工公开课 - 电影哲学课程节选

He said they combined that with other elements of healthy living, such as their diet.

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The silicon of which transistors are made is frequently doped with other elements, to affect its electrical properties.

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He also urged the bishops to continue to insist upon their right to participate in national debate through "respectful dialogue with other elements in society".

BBC: Pope Benedict XVI