In areas where river deltas inject organic material and dissolved trace elements into the sea, for instance, it's not clear how all of the intricately related processes will affect water chemistry.

例如，在有些地区，河流三角洲将有机物质和溶解的微量元素注入海洋，目前还不清楚所有这些错综复杂的相关进程将如何影响水的化学性能。

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Elements and principles mingle, combine, wed, multiply with each other, to such a point that the material and the moral world are brought eventually to the same clearness.

种种元素和始因彼此互相混合、搀和、交汇、增益，以使物质世界和精神世界达到同样的光辉。

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Earwax is a protective material that contains bacteria-fighting elements, but it sometimes accumulates and has to be cleaned out because it can impede hearing or cause pain.

耳垢含有对抗细菌的成分，是一种保护性物质，但有时它会堆积成堆，影响听力或造成痛苦，因此必须被清理掉。

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In the case of bitcoin, a strong case can be made that, even with secondary markets, certain virtual currencies lack the legal elements of material value and property.

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We also have the ability to check where a particular consignment of coltan comes from: we have a database of the residual elements typical of each known mine and can thus check material, as with a fingerprint.

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Plato believed that the first four corresponded to the elements of which the Greeks thought the material world was composed: fire, air, water and earth.

ECONOMIST: The shape of the universe