But the research team was able to conclude that infectious diseases and the introduction of new foods were the primary reasons that some genes swept through populations with such speed.

但他的研究团队可以断定，传染病和新的食物是某些基因以如此快的速度成为人类基因的主要原因。

youdao

The main purpose of the introduction is to provide the necessary background or context for your research problem.

引言的主要目的是为你的研究问题提供必要的背景。

youdao

It IS hard to imagine a less enticing title for a book than "Introduction to Operations Research".

很难想象一本书的名字会比“运筹学导论”这个名字还没有吸引力。

youdao

The first provides an introduction to Scottish ancestral research.

BBC: North Highland College launches online ancestry courses

To keep this tradition viable, festivals, contests and various other activities already organized by the Government of Uzbekistan and the local authorities are to be reinforced through the introduction of programmes for transmitting the tradition to young people and research (creation of a database, organization of conferences, publications, etc.).

UNESCO: Culture

This day-long parallel event will provide an introduction to the program and its approach, interactive discussions with experts on research questions and lessons relevant to the programme.

UNESCO: Basic Sciences