Grey board or unlined chipboard are the normal boards used for case-making.

无里粗纸板是造书壳的常用材料。

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Recorded in downtown Miami, the beggar with grey stubble and dressed in a tatty T-shirt and dark trousers, grins as he holds the board.

这位流浪汉在迈阿密市区乞讨，满脸白色胡茬，身着污渍斑斑的T恤衫和深色裤子，举着牌子时面露微笑。

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Recorded in downtown Miami, the beggar with grey stubbleand dressed in a tatty t-shirt and dark trousers, grins as he holds the board.

这位流浪汉在迈阿密市区乞讨，满脸白色胡茬，身着污渍斑斑的T恤衫和深色裤子，举着牌子时面露微笑。

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The devices are grey market add-ons that can be soldered to a console's main circuit board to bypass copyright controls.

BBC: Jail for seller of illegal Xbox chips

The figures show impressive increases across the board in a year where e-book popularity - in particular the likes of Fifty Shades of Grey - hit the headlines for racking up massive sales.

BBC: Fifty Shades of Grey

Kodak, like Fuji, has partly evaded those tariffs by selling most of its film through Hong Kong companies, which often smuggle the film in through the grey market, but its ambitions for the fast-growing Chinese market demanded a more above-the-board solution.

ECONOMIST: Kodak in China: Smile, please | The