Nevertheless, ancient DNA can undoubtedly be a useful and necessary tool to unveil the mysterious migration history of human beings.

但是毫无疑问，古代dna研究是揭开人类历史神秘面纱非常有用且必不可少的工具。

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This is a period of history that should not be forgotten, and is a subject that can't be neglected in population migration history of the 20th century as well.

这是一段不应忘记的历史，也是20世纪人口迁移史上一个不可忽略的课题。

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In it, a colored cloud is used to indicate the old process model version and a pop-up message box over the cloud shows the migration history of the instance, as shown in Figure 25.

在这个小部件中，一个有颜色的云被用于指向旧的流程模型版本，在云上弹出一个消息对话框，显示实例的迁移历史，如图25所示。

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Manfred Kayser says ancestry markers can - at best - trace an individual to a broad region: "Human migration history has produced no sharp genetic borders and no sharp appearance borders, " he explains.

BBC: Painting a suspect's portrait with DNA

The country has a history of migration from North Africa going back to the early 20th century.

ECONOMIST: Islam in France

Mr Goldin and his co-authors offer a history of migration, from man's earliest wanderings in Africa to the present day.

ECONOMIST: Migration