I was curious: I wanted to colour in all those parts of the European map that had until then been grey.

我很好奇，我要为欧洲地图上所有那些地方涂上颜色。直到那时，那些部分都是灰色的。

youdao

The company produces core-intensive castings in grey iron, ductile iron, aluminium, and copper alloys for a wide variety of products for the European industrial market.

该公司生产的核心，在密集的灰铸铁铸件，球铁，铝，铜合金产品，为欧洲工业市场的各种。

youdao

Five European grey wolf pups are the first to be born in the Highlands in 12 years.

BBC: Pup and mother Elara

Some might meander as far south as Melbourne, the so-called Paris of the Southern Hemisphere, with its cosmopolitan culture and European weather (its grey winter is infamous).

BBC: Epic traveller��s routes

But the European Court of Justice banned the sale of branded goods bought through unauthorised channels outside the European Union - on the so-called 'grey market'.

BBC: Jeans battle goes to court