Example sentences of "has [adv] been established [prep] a " in BNC.

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1 The air-filled Parafoil has long been established as a stable single line kite so its development as a steerable stunter for two ( or more as we shall see ) lines came initially as a surprise knowing only too well how difficult it is sometimes to get a Parafoil started .
2 The first guide-book to the city was published in 1781 , and it has long been established as a compulsory item on the tourist itinerary for both foreigners ( especially North Americans ) and Britons .
3 Edinburgh , has long been established as a cultural and artistic centre and , with its museums , galleries , learned societies and other institutions , makes the Faculty of Arts at Edinburgh University an unrivalled choice for postgraduate study .
4 It is difficult to equate a derelict railway goods yard in central London with new and rare plant species , or with unusual associations of native plants , but this has now been established in a special report supervised by the Urban Environmental Consultants at North London Polytechnic .
5 That rape in marriage happens and not infrequently has now been established by a number of studies .
6 The paired box has recently been established as a DNA-binding element , thus Pax genes are likely to encode transcription factors .
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