Example sentences of "[adj] over a [noun sg] [prep] " in BNC.

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31 Petrol prices are set to go up again ; traders in the world oil market still worrying over a war in the Gulf , today pushed their prices to their highest for ten years , at more than forty dollars a barrel .
32 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 .
33 The main provisions of the existing Acts covering health and safety , and regulations made under them , will be retained but will be amended , revised or repealed as necessary over a period of years .
34 When established during the 1940s , nationalised industries were instructed to operate in the ‘ public interest ’ and to break even over a period of years .
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