Example sentences of "it is often difficult [verb] " in BNC.
Next page| No | Sentence |
|---|---|
| 1 | It is often difficult to anticipate the time required to undertake a search . |
| 2 | It is often difficult to disentangle cause and effect . |
| 3 | In practice , however , it is often difficult to disentangle the two : the choice , use and interpretation of a method are all associated with and contingent upon the object in question . |
| 4 | In practice it is often difficult to define bibliographical types in a way that gives a reliable guide to content , and the selector is best advised to look at each bibliography individually . |
| 5 | Firstly there are what are usually termed onomatopoeic phonetic sequences : with these it is often difficult to define their exact limits . |
| 6 | Since it is often difficult to translate mathematical concepts into words ( see London Regional Transport v Wimpey Group Construction [ 1986 ] 2 EGLR 41 for judicial commendation of algebra ) , the formula must be checked mathematically either with a calculator or a computer . |
| 7 | As a result it is often difficult to analyse the errors of a probabilistic system in an effort to improve its performance . |
| 8 | But it is often difficult to judge . |
| 9 | It should be noted that it is often difficult to compare different recognition systems as they are reported because differences in input data and equipment can affect performance . |
| 10 | Experience shows that it is often difficult to assess the extent of exposure to light that samples receive in the market and hence to estimate the degree of exaggeration or acceleration that any one test gives . |
| 11 | It is often difficult to assess the colour vision of mammals , and some which were thought to see in monochrome have been shown to have sensitivity to colour . |
| 12 | It is often difficult to predict which patients will be able to develop effective work skills , and some quite seriously disturbed people with persistently odd behaviour can work effectively while others with few overt symptoms of mental disorder may have great difficulties . |
| 13 | Unfortunately , as was suggested in the last chapter , it is often difficult to decide on whether a word should be treated as complex or simple . |
| 14 | Unless and until agreements between the defenders on apportionment is reached , it is often difficult to agree on a joint approach to the pursuer . |
| 15 | A chance finding , outside the mainstream of scientific research , can sometimes be very valuable , but it is often difficult to see its potential . |
| 16 | It is often difficult to show on the model precisely how the components interact ( eg by a transfer of information or resources ) , particularly when drawing high-level models where such interactions may be extremely complex . |
| 17 | From a twentieth century perspective it is often difficult to admire either the management of plot and catastrophe or the sentiments of plays written in the mid-eighteenth century . |
| 18 | When things go wrong between artist and manager , it is often difficult to prove any of these contractual points . |
| 19 | The problem is that it is often difficult to determine how long an individual has been drinking . |
| 20 | Membership is gained consciously or unconsciously and it is often difficult to determine the time when a person becomes a member . |
| 21 | Likewise , in cursive handwriting it is often difficult to determine where one letter stops and another starts . |
| 22 | It is often difficult to determine whether the SPR is reporting a failure in the software , a misunderstanding , or a failure in delivered instructions . |
| 23 | It is often difficult to determine whether the SPR is reporting a failure in the software , a misunderstanding , or a failure in delivered instructions . |
| 24 | Even with a classification as complex as this it is often difficult to place a coast , because the division between A and B is not easy and is very subjective . |
| 25 | Even with endoscopic clearance , which should be more thorough , it is often difficult to remove radiologically undetectable , tiny fragments adherent to or embedded in the mucosa and therefore , latterly , patients have been given adjuvant bile acid therapy for an arbitrary three month period . |
| 26 | Remember how it is often difficult to think clearly when the air is heavy just before a storm , or how your mind seems to become clear and sharp in the crisp , clean air on a mountainside or beside the sea . |
| 27 | As the above story shows it is often difficult to think of the obvious . |
| 28 | This brief examination of the inter-relationships between family , migration and urbanization should serve to illustrate the point that it is often difficult to establish any clear pattern of causation . |
| 29 | It is often difficult to establish if a site is liable to flooding and it can be easily overlooked during the site investigation . |
| 30 | In matters relating to the social sciences , the number of variables is large and hence it is often difficult to establish valid theories of cause and effect . |