Project Icarus is an ambitious five-year study into launching an unmanned spacecraft to an interstellar destination.

伊卡洛斯计划是一项为期五年的雄心勃勃的研究，将发射一颗无人航天器到某个星际目标。

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The researchers would like to enroll 450 dogs for a more comprehensive five-year study, but do not yet have the money.

这些研究者想招募450只狗进行更全面的五年期研究，但目前经费不够。

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This initiative was a large five-year study aimed at better understanding factors that resist disease as the brain ages.

该启动计划是一项为期5年的大型研究计划，旨在发现能更好的理解大脑衰老过程中帮助大脑抵御疾病的因素。

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In one study,American researchers examined MySpace pages belonging to five hundred eighteen year-olds from the United States.

VOA: special.2009.02.03

In one study, researchers examined the pages of five hundred eighteen-year-olds from the United States.

VOA: special.2009.02.18

And some do it better than others. One measure of success is the five-year survival rate, and the lead author of a new study says that number varied dramatically among the different medical centers doing lung transplants.

VOA: standard.2010.07.14

California researchers in the early nineteen-eighties conducted a five-year study of teacher-skill development in eighty schools, and noticed something interesting.

NEWYORKER: Personal Best

Mr Garvin, who is doing a five-year study of the management of ten global giants, sees two main routes to durability.

ECONOMIST: Corporate durability

It doesn't stop ticking while a drugmaker does a five-year study to compare the drug, in safety and efficacy, with the alternatives.

FORBES: In Denial