Example sentences of "[noun] over [art] prolonged period of " in BNC.

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1 A stability test involves the accumulation of a substantial amount of data over a prolonged period of time and may require the production of reports at several stages of the test .
2 Because a teacher is concerned with a whole person over a prolonged period of time … so he tends to become involved as a whole person .
3 Declining per capita income over a prolonged period of time usually results in a change of government , sometimes after a revolution or a military coup .
4 During his reign he added vast territories to the Frankish kingdom that he had inherited ; Lombardy ( the traditional enemy of both Franks and papacy ) , parts of Spain , all of Saxony over a prolonged period of campaigning , and Slavonic regions of the Drave and Elbe .
5 The only people who are likely to experience extended periods of spontaneous regression are those who have been practising deep meditation over a prolonged period of time and have reached a high degree of competence in this field .
6 Should you experience any of the symptoms over a prolonged period of time , it is always advisable to have a check-up to ensure that you do not have a condition which requires professional help .
7 themselves admit that ‘ a definitive answer to the question of job techniques and job autonomy could be provided only by systematic and direct observation over a prolonged period of time ’ .
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