Example sentences of "occur from time to " in BNC.

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1 It causes ‘ thrush ’ , which is an infection of mucous membranes occurring from time to time in young children , characterized by white patches developing in the mouth .
2 Frequently generals thought it best if they were outmanoeuvred to in effect accept an honourable surrender er and er bargains of this kind occurred from time to time between largely mercenary armies .
3 We may be reminded of the ‘ hummadruz ’ , or mysterious humming with no apparent cause , which occurs from time to time , particularly at ancient sites .
4 There 's incidental impotence which occurs from time to time when a man fails to get an erection after having had too much to drink , for example ; or through tiredness , worry or anxiety .
5 The discovery in the quarries of pre-historic footprints of dinosaurs — iguanodon or megalosaurus — has occurred from time to time , notably in 1963 when samples were removed to the British Museum , and again in 1980 when over 30 footprints were uncovered at Townsend during building work .
6 Unless the mutation has become established , it is extremely rare for such forms to be found in the wild , although they must occur from time to time .
7 The list is comprehensive and correct at the time of publication , but additions and deletions may occur from time to time .
8 In general Keynesians recognized that changes in W could occur from time to time , but the factors influencing these changes were extrinsic to the equations of the income-expenditure model .
9 No attempt should be made to use monetary policy to offset any disturbances which may occur from time to time .
10 Unfortunately , these accidents still occur from time to time .
11 It would be interesting to note also the stresses that occur from time to time , be they physical , mental or emotional and to observe their effect on health .
12 Revolutions occur from time to time in nearly every field of science , and I believe that such a revolution is occurring in medicine — largely through the impact of complementary medicine .
13 These changes were no more disruptive than those which occur from time to time in non-colonial societies .
14 The incident mentioned by the hon. Lady is clearly deplorable , as are the deportations that occur from time to time and the closures of universities , about which we have also protested .
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