Example sentences of "over [art] relatively [adj] period [prep] " in BNC.
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| 1 | Nevertheless , they counter that the physical environment should not be considered a constant , even over the relatively short period of agricultural settlement in Great Britain , in part because of climatic change and its consequences , in part because of changes wrought by land use practices , and in part because of changed perceptions of the environment ; see also Prince ( 1971 ) , and Blaikie and Brookfield ( 1987 ) . |
| 2 | Our own surveys confirm a strong switch towards optimism between our Mid-Term Wave in 1986 and our Pre-Campaign Wave in March 1987 , but over the relatively short period from our Pre-Campaign Wave to the end of the campaign overall trends in economic perceptions were small . |
| 3 | This was particularly the case with patients who had been given methadone reduction over a relatively long period of time , say two to three months . |
| 4 | Elicitation procedures make it possible to examine a very broad spectrum of linguistic abilities in a systematic manner over a relatively short period of time . |
| 5 | It appears entirely possible for a coronary artery to progress from one with hardly any narrowing to one which is completely blocked over a relatively short period of time ; and conversely , it is possible for a severe coronary stenosis to stay as a severe coronary stenosis without progressing for several years . |