Example sentences of "[noun sg] over long periods [prep] " in BNC.
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1 | Anomalous aspects of nature often venerated by ritual over long periods of time become charged with the directed mental/ psychic energy of their race . |
2 | With brute strength ( it took at least ten horses to shift even one medium field gun ) , the Germans eventually moved their guns forward but the delays involved meant that many of the deadly 21Os , so essential a part of the German offensive technique , were hors de combat over long periods of the battle during its most critical phase . |
3 | The crucial experiments with standardised diets , each time excluding or adding wheat or rye flour over long periods in these children with coeliac disease , were performed on four children in the Wilhelmina Children 's Hospital in Utrecht and in one child in the Juliana Children 's Hospital in The Hague . |
4 | Not only is the method not scientific but , to the extent that Marx did make certain historical prophecies which can be related to empirical evidence over long periods of time , these can be examined and by and large they have not proved to be valid . |
5 | It might be expected that where such clonal growth is possible , the struggle for existence over long periods of stable management would lead to the local dominance of single clones — those that had succeeded in a struggle for existence with others . |
6 | What I know about palaeotology is n't too much I mean I obviously have to try and know a bit , but it 's not my field — erm in order to test the minor claim , you have to be able to get your hands on some rock which actually consists of continuous sedimentation over long periods of time . |
7 | Comparisons of this kind are difficult to make with accuracy over long periods of time ; but the direction and size of the change are beyond doubt . |