Example sentences of "[coord] [noun] over a [adj] period " in BNC.

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1 In accepting this offer , they agree to buy a certain number of books or records over a specific period of time ( eg four books a year ) .
2 In the short term , nitrogenous fertilizers , by increasing grasses and clovers , can result in an increase in the earthworm population , but continuous use of superphosphate or Nitro-chalk over a long period has been shown , in trials at Rothamstead , to reduce numbers in proportion to the amount of nitrogen applied .
3 The ecological significance of these precipitation figures in terms of soil moisture may be judged by relating them to the amount of moisture lost through evaporation and transpiration over a given period .
4 In the decade 's final timetable , there is an express every 15 minutes ( plus one extra ) between Swindon and Paddington over a two-and-a-half-hour period in the morning rush .
5 Many of the most popular plants in gardens today fist arrived with the flood of introductions which filled our nurseries and gardens over a fifty-year period .
6 According to the original plan , around 30 tons of plutonium " needed to supply the domestic nuclear-energy programme " would be shipped from reprocessing plants in France and Britain over a 20-year period .
7 National expenditure is the actual amount of money spent on goods and services over a given period of time , whereas aggregate demand is the total value that households , firms , the government and foreigners plan to spend out of their respective incomes over that time period : in other words , it is the total amount they are willing and able to spend .
8 The analogy with Munros and their associated Tops is obvious , and to collect either is likely to involve above average commitment and dedication over a sustained period of years , and require a broad spectrum of mountaineering skills .
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