物理标准模式理论中有一项极为重要的试验，该试验检测的是宇宙空间中3中质量最轻元素的确切丰度，即需要列出到目前所发现的基本粒子与将它们融合起来的各种作用力。
The exact abundances of the three lightest elements are an important test of the so-called Standard Model of physics-the list of fundamental particles found so far and the forces that link them.
虽然氢在地球上的丰度只占第九位，但占宇宙中所有物质质量的75%。
Though only the ninth most abundant element on Earth, it represents about 75% of all matter in the universe.
虽然这是首次观察到这一现象，但这一新型的矮星系在更遥远、更早期的宇宙中应该相当普遍，因为那时宇宙中的原始气体丰度要比现在高的多。
Though never seen before, this new type of dwarf galaxy may be common throughout the more distant and early universe, when pristine gas was more pervasive.
虽然这是首次观察到这一现象，但这一新型的矮星系在更遥远、更早期的宇宙中应该相当普遍，因为那时宇宙中的原始气体丰度要比现在高的多。
Though never seen before, this new type of dwarf galaxy may be common throughout the more distant and early universe, when pristine gas was more pervasive.
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