Example sentences of "[noun] [verb] known for [adj] [noun sg] " in BNC.

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1 John Rolfe , conference chairman , said : ‘ People within the industry have known for some time there is a need for such a gathering .
2 The move has been criticized by environmental organizations , which argue that the cars could be fitted with a converter because the cost , around £300 per car , is not prohibitive and that in any case manufacturers have known for some time when the law would come into effect .
3 As the official investigation got under way , there were allegations that senior US officials had known for some time of BNL 's dealings with Iraq .
4 People have known for some time what has been going on , and I 'm surprised it has taken this long to come out into the open .
5 Scientists have known for some time that fusion reactions between nuclei of deuterium and tritium are more likely if the nuclear spins line up in the same direction .
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