Example sentences of "over a period " in BNC.
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| 31 | You will need to spray at three day intervals at least three or four times , but preferably over a period of several weeks to control any new pests as soon as they hatch , before they can reproduce . |
| 32 | People 's eating habits and food preferences are learned ; they are habits that become ingrained over a period of years . |
| 33 | All the small modifications should add up over a period of time to make major achievements . |
| 34 | It is much better to build up endurance levels gradually and gently over a period of weeks and months . |
| 35 | Good examples of activities to maintain motivation are collecting inspiring dieting case histories from slimming magazines ; going out to buy a dress one size smaller than your present size ; looking at charts and graphs that show good overall weight loss over a period of time . |
| 36 | If you mark your weight on a graph or chart this should provide a clear and rewarding sign of progress over a period of weeks and months . |
| 37 | You have learned to look hard and analyse a complex situation , devise a detailed strategy for solving it , and then carefully carry it out over a period of time , revising your plan where necessary to cope with unforeseen difficulties . |
| 38 | Often this is to do with the fact that the current bereavement has driven the person into emotional overload because of everything else that is happening in their life either currently or over a period of time . |
| 39 | A currency hoard is a sum of money put together by drawing all its coins from circulation on a single occasion , whereas a savings hoard is formed by gradually adding coins to a hoard over a period of several years ; the difference in the way the coins were collected will affect the internal composition of the hoard . |
| 40 | Many players , as it happened , were coming near to the age of retirement , so it was possible over a period of six or seven years to make the orchestra young again . |
| 41 | Different people at different times and in different places , over a period of five years , displayed the same interest in the past , and ( within acceptable degrees of variation ) gave the same account of incidents and conditions , and gave the same weight to it in their explanations of their actions . |
| 42 | For this reason production cooperatives must be encouraged to grow from small beginnings over a period of time with sensitive support . |
| 43 | maintaining contact with families over a period of time |
| 44 | Studies using X-ray analysis have shown that some paintings , such as Renoir 's The umbrellas , were painted over a period of years , with several definite alterations and distinct stages involved in the painting . |
| 45 | The Secretary of State for the Environment told the House of Commons that ‘ after taking legal advice ’ he had decided that ‘ the term ‘ maximum admissible concentration ’ in the European Community Drinking Water Directive should relate to individual samples and not to averages over a period ’ . |
| 46 | He believes that practice in , for instance , mirror exercises , would over a period of time develop these personal traits , so often neglected by a traditional curriculum . |
| 47 | But to return to our historical account , as if the picture was not already complicated enough , the Ministry of Education found its own way of promoting drama — to align it with Physical Education , a policy which was gradually put forward by certain Inspectors for Physical Education over a period of 20 years from about 1945 . |
| 48 | Taxes and public spending to be set to reach a ‘ savings target ’ for the nation over a period of years . |
| 49 | And when it is burnt in large amounts , then the CO 2 that was taken up in the ancient world over a period of , say , a million years , may be released into the modern world in just a few years . |
| 50 | The Club also owned the auditors £400 accumulated over a period . |
| 51 | Over a period of 30 years a number of surveillance systems were produced : first the U-2 Spy aircraft , followed by the incredibly fast SR-71 ( both of which are still in service today ) , and then a whole generation of satellites culminating in Rhyolite ( see page 28 ) . |
| 52 | Over a period of twenty years it is claimed that a fast reactor could breed enough additional plutonium to fuel another similar power station . |
| 53 | Then all the comparatively non-radioactive building materials and superstructure would be removed — again over a period of up to seven years . |
| 54 | The everyday lives of ordinary people are not the basis for good television unless the characters and events are portrayed in a consistently entertaining fashion , and over a period of time ; hence the great success of television soap operas . |
| 55 | After his death his empire could barely be sustained by the new rulers ( including Charles the Bald and Charles the Fat — is it possible to hold an empire together when the populace is taking the mickey out of you to that extent ? ) and crumbled away over a period of two centuries . |
| 56 | Like many of the other city churches it was destroyed by fire in the eleventh-century , being totally rebuilt ( on the same foundations ) in Romanesque style over a period of two hundred years . |
| 57 | But over a period of time , two things disturb this equilibrium : evaporation and infiltration . |
| 58 | The stardom sort of crept up on Nicholson over a period of weeks . |
| 59 | It was a ‘ fly-on-the-wall ’ programme covering the fortunes and misfortunes of a London family , over a period of time — warts and all . |
| 60 | Furthermore measurement has usually to be made over a period of time . |