Economic types and economic achievements are human base of the characteristic of cultural area.

经济类型和经济成果是构成文化区域特色的各种人文条件的基础。

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Further afield four per cent are optimistic there will be a permanent human base on Mars while one in ten expect a colony of humans to be living in space.

有4%的人想得有点远，他们乐观地相信到时候火星上会有一个永久性人类基地，而十分之一的人认为2025年会有人移民太空。

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Mr Harrison: the human knowledge base is eroding as we lose languages, exacerbated by the fact that most of them have never been written down or recorded.

哈里森：语言的消亡意味着人类知识库的湮灭，消亡时没有留下任何文字或声音记录的语言则更加剧了这种损失。

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The goal of that was to take for a typical human, or for a typical - in the case of the human genome project maybe you're looking at fruit flies, you want to look at all the DNA in a fruit fly, but to look at the sequence of base pairs that makes up human DNA and write them all out; we'll talk about that later.

这个计划的目的是,建立一个有代表性人类的基因顺序,或者说是典型的人类基因组,就人类基因组计划来说,或许你在研究果蝇,你想观察果蝇内的所有DNA,而人类基因组计划是观察组成人类的,DNA的碱基对顺序并且将它们记录下来,我们不久之后会讨论这些内容

耶鲁公开课 - 生物医学工程探索课程节选

One could think of many reasons for considering a human base on Mars - such as over-population on Earth - but Darlene Lim is mainly motivated by the thrill of exploration.

BBC: Destination Mars on Earth

And most exciting to the young space geek, such a reactor could power a spaceship to a distant planet and then be the power source for a human base at the destination, he said.

CNN: Save the planet, then finish high school

And from that base human perspective, Clemens's adamant denial makes sense.

NPR: Clemens Grilled on Capitol Hill