Example sentences of "[vb -s] [verb] [adv] [prep] [art] period " in BNC.

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1 The relationship between fertility rates and mortality rates has created a population structure which has varied substantially during the period in question .
2 Hunterston Power Station has operated continuously throughout the period generating 317.7 GWHrs of electricity .
3 Interviews with the head , senior staff , teacher-librarians and members of the library committee disclose a large measure of agreement that the use made of the library by many of the departments and courses has increased substantially in the period covered by the project .
4 Pressure to publish is accepted as a normal feature of research work , but publication of Ph D results before or very soon after completion of the thesis has increased considerably in the period after 1977 .
5 Pressure to publish is accepted as a normal feature of research work , but publication of Ph D results before or very soon after completion of the thesis has increased considerably in the period after 1977 .
6 It is clear that insubstantial changes will not give rise to a new copyright ( or right to prevent unfair extraction ) but what is the position when a database has changed considerably from its original form but this has happened incrementally over a period of time ?
7 It tends to happen gradually over a period of time .
8 If your dog fails to respond readily over a period of time , it will be worthwhile having its hearing checked by a veterinarian .
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