Example sentences of "have know for [det] time " 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 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 .
3 I am delighted to have heard anything worthwhile by Schillings , whose music I have known for some time in piano-vocal scores but have not encountered in performance .
4 The Major , a close confidant of the Princess , added : ‘ We have known for some time that some very senior members of the IOC have the knives out for our sport .
5 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 .
6 We have known for some time that this can not have been the case .
7 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 .
8 ‘ The decision to print elsewhere was a commercial one , for we have known for some time that the quality of our printing of newspapers leaves a lot to be desired , while our commercial printing side is first class .
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