Example sentences of "[noun sg] [noun pl] [prep] a long period " in BNC.
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1 | What we are clearly seeing in some areas is roughly the same group of people exploiting the same local landscape for their subsistence requirements over a long period , but with successive generations living on different sites at different times . |
2 | Simulation has been used to predict population changes over a long period of time and for charting space-satellite trajectories . |
3 | Greek Intelligence must have been taking a more than passing interest in the activities of our friend Andropulos over a long period , years I would think . |
4 | In these respects , there has been a general and continuing decline in prison conditions over a long period of time ( King and McDermott , 1999 ) . |
5 | The problem of consistency of measurement techniques over a long period of time will have to be faced and may not have a satisfactory solution . |