Understanding our past is what historians and anthropologists seek to do.

了解我们的过去是历史学家和人类学家一直探索的事情。

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Satellites can hardly see past the surface of the water, let alone the ocean floor, and so the ocean remains relatively opaque to our eyes, our technology, and for the most part, our understanding.

卫星几乎无法观察海洋表面以下的情况，更不用说海底，所以相对而言，凭借我们的肉眼、技术，以及我们的理解能力，我们仍然无法看透海洋。

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Despite the strides made in our understanding and treatment of mental illness in the past two decades, many mental health concerns are still misunderstood and stigmatized.

尽管在过去的二十年中，对于精神疾病的理解和治疗都有很大的进步，但许多心理健康问题还是被误解和指责。

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It's going to require leadership, and it's going to require a knowledge and an understanding of our glorious past, a willingness to lead on tough issues today and also an understanding of the greatness of America's future if we do the right thing.

CNN: Thompson's October 19, 2007, speech to Value Voters Summit

Only the integration of all potential evidence for past earthquakes enables us to advance our understanding of the complex earthquake history of a region.

UNESCO: Tales set in Stone: learning from ancient earthquakes

In this, Last Call does what great history should: acts as a window to the past that opens to a greater understanding of our present.

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