关键词： 泥河湾盆地；汾渭裂谷；早期古人类；生存环境 [gap=1607]Key words: Nihewan Basin; Fen-Wei Rifting; early ancient humen; living environment
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二级过程的存在对ESR法测早期古人类遗址动物牙化石年龄的影响需进一步研究。
The effect of the 2nd-order annealing kinetics on ESR dating of ancient (early Pleistocene) fossil tooth enamel samples should be further studied.
古人类学家，考古学家，最近还有遗传学家都支持“走出非洲”的理论，该理论认为早期人类是从非洲大裂谷走出来的。
Palaeo anthropologists, archaeologists and, more recently, geneticists have all bolstered the "out of Africa" theory, which holds that early man wandered out of the Rift Valley.
湖北省郧西县白龙洞古人类遗址属于中更新世早期，发掘出表面带有痕迹的骨化石标本。
Some fossil bones with surface marks were uncovered in Bailong Cave, a palaeo-anthropological site of the early stage of Middle Pleistocene.
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