在过去的几十年中，对语言的本质以及产生并使其易于理解的过程的研究表明，它具有极大的复杂性，而不是潜在的简单性。

Research during the past several decades on the nature of language and the processes that produce and make it understandable has revealed great complexity instead of underlying simplicity.

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在过去的几十年中，获得利润是要承受很大压力的。

Profits should have been under extreme pressure for the past few decades.

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在过去的几十年中，硬盘驱动器的容量或尺寸已经飞速发展。

Over the past decades, the capacity, or "size," of hard drives have exploded.

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