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| 21. | Calcium, the most abundant mineral in the body, has long been recognised as vital for the formation and |
| 钙是人体中最丰富的矿物质，长期以来一直被认为在强壮的骨骼和牙齿的形成和保持方面作用至关重要。 |
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| 22. | a ductile gray metallic element of the lanthanide series; used in lighter flints; the most abundant of |
| 一种有延展性的灰色金属元素，用作打火石，稀土属元素中含量最丰富的一种。 |
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| 23. | molecule, methane's heat-trapping power in the atmosphere is21 times stronger than carbon dioxide, the most |
| 按分子与分子对比，甲烷在大气中吸收热量的能力比二氧化碳——最丰富的温室气体要高21倍。 |
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| 24. | Another way to solve the problem of water scarcity is to learn to make use of the most abundant supply |
| 另一种解决缺水问题的方法就是充分利用最丰富的水资源??大海。 |
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| -- 来源 -- 英语晨读30分（高三） - 29 Water Scarcity |
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| 25. | These characteristics indicate that they are quartz which is a widespread and the second-most abundant |
| 以上特征表明这些矿物是石英，石英矿物分布广泛，在地壳中的含量仅次于长石。 |
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| 26. | a clean energy source that also happens to be the most abundant element on the planet. |
| 还有一种更吸引人的选择是氢气??一种地球上蕴含量最丰富的干净能源。 |
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| -- 来源 -- 空中美语-科普篇-怒发冲冠为哪桩？ - High Hopes for Hydrogen |
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| 27. | The most abundant class of food lipids is the acylglycerols, which dominate the composition of depot |
| 最丰富的食物油脂是甘油脂,它在动植物贮存脂肪中是最主要成分。 |
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| 28. | that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most |
| 一种非金属单价元素，通常为无色无味、极易燃烧的双原子气体，宇宙中最简单、最轻、最丰富的元素。 |
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| 29. | They learned that it is the only body in the solar system besides Earth where nitrogen is the most abundant |
| 他们得知在太阳系内除了地球以外，它是大气中含量最丰富的气体氮的唯一天体。 |
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| 30. | a white metallic element that burns with a brilliant light; the fifth most abundant element in the earth's |
| 一种白色的金属元素，燃烧时放出亮光，地壳中含量居第五位的元素，大部分动物植物的重要组成部分。 |
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