Example sentences of "to [noun] over a period " in BNC.
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| 1 | The Secretary of State for the Environment told the House of Commons that ‘ after taking legal advice ’ he had decided that ‘ the term ‘ maximum admissible concentration ’ in the European Community Drinking Water Directive should relate to individual samples and not to averages over a period ’ . |
| 2 | Since females in these species become available to males over a period of weeks or months , the possibility exists for some males to mate with several females during the course of a breeding season . |
| 3 | While not giving details of the pricing , he said that the price-performance curve on the 80486 is the basis for pricing of the Pentium and that he expected the sort of dynamic that applied to the 80486 to apply to the Pentium as well — the 80486 being introduced at $900 to $1,000 and falling to $200 over a period of four years — at a rate of 30% per year . |
| 4 | Thus he favoured co-operation with other major industrial states in the hope that sterling might be restored to health over a period of three or four years . |
| 5 | The hon. Member for Blackburn produces wholly fictitious figures which compare the new building costs for new schools or for the conversion of schools to CTCs over a period of three years with the capital expenditure borrowing guidelines for 14 authorities in one year . |
| 6 | Seismic data were returned to Earth over a period of a few years from these five stations , though they were reduced to four when the Apollo 11 station stopped working . |