Example sentences of "over a [adv] long " in BNC.

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1 Grammatical change occurs over a much longer time scale than lexical change .
2 The basic differences between them in respect of their value to architectural study is that Ostia was occupied and developed over a much longer period , from the fourth century B.C. to the third century A.D. , and that it was not a provincial city but the port of Rome and , as such , became more important , as is evidenced by its buildings .
3 For , despite acquiring a mass of archival material stretching over a very long period of time , the Chinese never developed anything corresponding to the modern Western concept of history .
4 Fact : The authors have chosen here to quote undiscounted and out-of-date figures although they make much play of discount rates elsewhere in their article and must be aware that the decommissioning costs concerned arise over a very long period of time stretching to the end of the twenty-first century and beyond .
5 Conduction of heat occurs only very slowly through rock , and if this is the only mechanism operating uplift will occur over a very long period — something of the order of 100 Ma .
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