The researchers observed 95 asteroids in the vicinity of our planet, called near-Earth asteroids (NEAs).

研究人员们观测了95颗地球附近的小行星，它们被称为近地小行星(NEAs)。

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That's according to a survey of the sky that NASA is calling the most accurate census yet of near-Earth asteroids.

这是根据美国宇航局(NASA)称之为“最准确的”一次近地小行星普查的结论。

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Strategic DRMs, such as missions to near-Earth asteroids (NEAs), use upgraded systems along with conceptual, currently undeveloped systems.

战略DRMs， 如到近地小行星（NEAs）的任务，使用概念性升级系统，目前尚未开发的系统。

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Still another is the crash of large asteroids, minor planets that fall to earth.

VOA: special.2009.03.17

Of about 9, 700 near-Earth asteroids discovered so far, about 5, 200 are thought to be Apollos.

BBC: Russia meteor's origin tracked down

It is thousands of times bigger than some of its neighbours and part of a group known as the near-Earth asteroids.

BBC: At a glance: Asteroid touchdown

So far they have counted more than 9, 000 near-Earth asteroids, and they spot another 800 new space rocks on average each year.

BBC: Apophis asteroid: Large space rock flies past Earth