Example sentences of "[noun] have be known for [adj] " in BNC.

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1 As members will be aware , the Local Government Regions and Districts have been known for some time , and the areas of the Sheriffdoms were published at the beginning of the year .
2 FLARES on the Sun have been known for many years to produce powerful bursts of X-rays , gamma-rays and charged particles .
3 Variants of this reaction have been known for many years .
4 Variants of this reaction have been known for many years .
5 The research has been done for some time and the results have been known for some time , yet still the Government do nothing .
6 These letters have been known for some time , as the aggrieved Leone published them in a pamphlet in 1764 .
7 But we know very little about the animals which bore these scales and although a few articulated remains have been known for several years , they show very little anatomical detail and it is not easy to identify immediate relatives .
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