Example sentences of "[verb] [adj] [prep] a period " in BNC.

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1 salesman 's gon na do that over a period of time .
2 We may explain the fact that the production units of a particular industry have grown larger over a period of time by appealing to the economies this yields , and in doing so claim that a cause ( increase in scale ) occurred because of its propensity to have a certain effect ( economies of scale ) .
3 One should also remember that for a period of about three or four months in the summer the terraces are closed completely .
4 Other changes in structure developed more slowly , but although the pattern looked different over a period of a few years , analogues of the basic groups seem to have been present ever since the phenomenon of the contemporary football fan arose in the middle to late 1960s .
5 The Test of Professional Competence , for building surveyors , first introduced in 1973 , has remained unchanged over a period during which many other changes both technological and sociological have taken place within the Division .
6 It might seem odd during a period of so much innovation and advancement in photographic technology that a film developer formulated in 1891 should still be so popular today , over 100 years on
7 Rudolph Ackermann issued some fifty books with coloured plates , including the well-known Repository of Arts , Literature , Commerce , Manufacture , and Politics , which appeared monthly over a period of nearly twenty years .
8 When established during the 1940s , nationalised industries were instructed to operate in the ‘ public interest ’ and to break even over a period of years .
9 For example , a general wage increase in a factory will be passed on to everyone , whether they backed the union campaign which secured it or remained inactive during a period of industrial militancy .
10 It was not surprising that the amount spent on exploration sank from $760 million in the still relatively fat year of 1979 to between $120 and $150 million at the end of the 1980s and the size of known reserves remained static over a period of at least four years .
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