He opened the grey box, but found nothing in it.

他打开灰色盒子，里面什么也没有。

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Of note is that the slim grey box on the left hand side is the actual boxplot.

注意左手边有一个青灰色的方框是实际的箱线图。

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In this paper, an oilfield is taken as a dynamic system from the view of a grey box system control.

本文从灰色系统控制角度出发，将整个油田看作是一个动态系统。

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Gone, is the old boring dull grey box look and in comes bright and vivid colors and designs that excite.

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It might not look full of promise but a lot of hope is hanging on a big grey box at a Cornwall wind farm.

BBC: Roscrow wind farm tests strain of green energy on power grid

Along with the rest of the equipment loaded into the back and strapped on to the roof of the ambulance, there is one modest-looking grey box.

BBC: Mobile technology battles HIV