Example sentences of "a very long period " in BNC.

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1 On the other hand all modern anthropologists and archaeologists would agree with the view that for a very long period of history mankind has existed solely by hunting , fishing , and gathering , and that such a technological stage always precedes domestication of plants and animals .
2 When you spread work like this over a very long period you are able to look into yourself , and see yourself in a great work of art .
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 There was therefore a very long period during which the need for a god was having its effect on the developing mind of man , but during which no god worship as now understood was practised .
5 Enterprise zone property trusts are established to be held as an investment for a very long period ( usually 25 years ) and as Capital Ventures warns : ‘ You may have difficulty in selling your investment before realisation of the underlying property … ’
6 The fact that it is very difficult to do does n't prevent a lot of people wishing to achieve it , but it is very seldom that , in the industrial world , anybody has achieved and held continuously a pre-eminent position over a very long period of time .
7 Fact : The authors have chosen here to quote undiscounted and out-of-date figures although they make much play of discount rates elsewhere in their article and must be aware that the decommissioning costs concerned arise over a very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 .
8 It is then not surprising that for a very long period the most difficult problems in the social relations of cultural practice revolved around the question of literacy .
9 One possibility would be a statutory reformulation of Rylands v. Fletcher shorn of the qualifications and defences which so emasculate it now , perhaps on the lines of the Restatement , which imposes strict liability on one who carries on an ‘ abnormally dangerous activity , ’ but this would be open to varying judicial inclinations and would give rise to considerable uncertainty for a very long period of time .
10 Clearly this is consistent both with a period of about a day and with a very long period .
11 Investigations into the activities of this particular gang had been carried out over a very long period and they had been kept under constant surveillance by our officers who were thus able to feed us all the necessary information towards a successful interception .
12 Earth science papers have a very long period of use , compared to physics or engineering , but there is variation between sub-disciplines .
13 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 .
14 One , for example , oh five , six years ago , perhaps more , time passes so quickly erm on the Lewes to Wych Cross road , closed the road at Dane Hill for a very long period of time , while the road was completely reconstructed .
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