Recent studies of sediment in the North Atlantic's deep waters reveal possible cyclical patterns in the history of Earth's climate.

最近对北大西洋深海沉积物的研究揭示了地球气候历史上可能的循环模式。

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These fossils are also offering clues to how viruses evolved. Dr. Katzourakis and his colleagues have found fossil viruses that are helping shed light on the deep history of H.I.V., for example.

这些化石病毒也为病毒的进化提供线索，Katzourakis博士及其同事已经发现化石病毒对阐明HIV的悠久历史有帮助。

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The most destructive century in all the millennia of human history was only just concluding; it was not buried in some deep, dark ancient past.

在人类数千年的历史中，最具有破坏性的一个世纪刚刚告一段落，人们还没有将它埋入深不可测的上古深渊。

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Britain has a long history of deep involvement in not only Iran, but across the Middle East during the past 200 years.

VOA: standard.2009.07.02

For thinkers like Tocqueville for example regimes are embedded in the deep structures of human history that have determined over long centuries the shape of our political institutions and the way we think about them.

举例来说，对于像托克维尔之类的思想家而言,政体内嵌于人类历史的结构深处,许多世纪以来决定了,我们政治机构的形态,及我们对它们的看法。

耶鲁公开课 - 政治哲学导论课程节选

Ambassador Dr. Nassif Hitti, Permanent Observer of the League of Arab States to UNESCO, recalled the long and deep history of dialogue between the European and Arab regions and their societies, featuring rich exchanges at all levels.

UNESCO: MEDIA SERVICES

Others are sure it must be in Yellowstone, because of Fenn's history there and his deep knowledge of the park.

NPR: 'I Love Mysteries,' Says Man Claiming Hidden Gold

The Supreme Court is weighing Shelby County's challenge to a portion of the law that requires states with a history of racial discrimination, mostly in the Deep South, to get approval from the Justice Department before implementing any changes in election laws.

NPR: Biden Leads Re-Enactment Of Voting Rights March