Example sentences of "over a [adv] [adj] period [prep] " in BNC.
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| 1 | The fact that it is very difficult to do does n't prevent a lot of people wishing to achieve it , but it is very seldom that , in the industrial world , anybody has achieved and held continuously a pre-eminent position over a very long period of time . |
| 2 | Comparison of the contents of the first two editions of Craig 's ‘ Geology of Scotland ’ , published in 1965 and 1983 , reveals just how completely and all-pervasively this change took place over a very short period of time . |
| 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 . |
| 6 | What we try to do is to make available to people opportunities for study in depth and over a fairly long period of time , on issues and in subjects which are part of University activity . |