万年

Past reversals have taken place over a short period of time geologically speaking, 10,000 years or so.

过去的倒转在地质学上的说法是发生在一个短的时期，大约1万年。

Gifford said: It was generally agreed that such a virus similar to HIV in the emergence of a maximum of only 100 million years of time.

吉福德说：人们曾普遍认为，这种类似艾滋病毒的病毒的出现时间最多只有100万年。

But if Gifford and his colleagues find more evidence that lentiviruses and primates have been in each other's genetic business for many millions of years, they could turn that assumption on its head.

但如果Gifford和他的同事找到更多证据，证明慢病毒和灵长类已经在基因上交手几百万年，他们就能推翻这一假设。

Moderator: After exploring ancient scholars, the original 200 million years ago in the early Quaternary, widely distributed in our country of an ancient faunal groups, and their fossils have been discovered more or less to Panda and represented a Gigantopithecus, called Panda - Gigantopithecus fauna.

主持人：经过古生物学者探讨，原来在200万年前第四纪初期，在我国广泛分布着一个古老的动物区系的类群，它们的化石已经或多或少被发现了，以熊猫及一种巨猿为代表，称之为熊猫——巨猿区系。

The late Grover Krantz, a Washington State University professor who specialized in cryptozoology, the study of creatures that have not been proven to exist, believed Bigfoot was a "gigantopithecus," a branch of primitive man believed to have existed 3 million years ago.

华盛顿大学已故的从事动物学研究的教授Grover Krantz曾说，还没有证据证明这种生物的存在，他相信大足野人是一种巨猿。而这种巨猿是300万年前原始人的一个分支。

Beijing Institute of Cultural Relics and Archaeology,Beijing,China,100009Abstract The sedimentary characteristics and facies ofthe cultural layers in the late Paleolithic period of the late Late－Pleistocene in theWangfujing Oriental Plaza site were studied based on the comparison and analysis of thetypical sedimentation profile of the site and more than 150 stratigraphic data.The paleo－geomorphicsurfaces during the periods of 2.2×104a B.P.were rediscovered.The studysuggests that the ancients must have acted in the sandy islands of alluvial fans,whichwere evolved in relatively steady water flows during the interglacial stage with slightlywarming in the last glacial epoch.

沉积相与古地貌研究徐海鹏莫多闻岳升阳朱忠礼郁金城摘要：通过对遗址地层典型沉积剖面和遗址地区150余个地层资料的对比分析，揭示了北京王府井东方广场晚更新世晚期旧石器人类遗址地层的沉积特征与沉积相类型，从而恢复了距今2.2万年前人类在此生存活动的古地貌面。

The last glacial period, with two warming intervals, began at about 110 000 years.

末次冰期始于距今11万年，存在两个温暖期，冰盛期温度降低约9℃。

Is a legacy of the Quaternary glacial ancient trees on Earth over 250 million years of history.

是第四纪冰川遗留下来的古老树种，在地球上已有250万年的历史。

Lions died out in northern Eurasia and America at the end of the last glaciation, about 10,000 years ago;[16] this may have been secondary to the extinction of Pleistocene megafauna.

在狮子死亡欧亚大陆北部和美国结束时的末次冰期，约在一万年前； [ 16 ]这可能是次要的巨型动物灭绝的更新世。

The current rate of increased carbon dioxide release into the atmosphere by humans may delay the onset of the next period of glaciation until at least 50,000–130,000 years from now.

由于人类向大气中排放二氧化碳的速度加快，下一个冰川时期的到来可能会有所延迟，至少在距今 5 万至 13 万年以后。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。