There are multiple ways to define a coordinate system for Earth coordinates; some are better for particular purposes than others.

有多种方式来定义地面坐标系统；有一些在某些用途方面比其他的更好。

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Shapiro doesn't think it's necessary to invoke multiple universes or life-laden comets crashing into ancient Earth.

夏皮罗认为，没有必要援引多重宇宙或载有生命的彗星坠落到远古地球的事。

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Its constellation consists of 66 low earth-orbiting, cross-linked satellites and has multiple in-orbit spares.

它的星座由66个低地球轨道交联卫星组成，并有多个卫星在轨备用。

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It also stressed the need to return samples from Mars to Earth, so they could be fully analyzed by multiple scientists.

CNN: What we've done on Mars, and what's next

Other sites with devoted followings such as the photo-sharing site Flickr also won multiple awards, as well as sites such as Google Maps and Google Earth.

BBC: The BBC has scooped three prizes at the annual Webby Awards.