Example sentences of "is difficult [verb] these " in BNC.

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1 It is difficult to use these data to draw any reliable inferences as to whether the prevalence among the institutional population is increasing .
2 It is difficult to put these sums into context for there is no knowing what benefit has been achieved compared to what would have resulted from some other social expenditure .
3 Barthes 's distinction between language and metalanguage depends on a clear distinction between denotative and connotative levels of meaning and yet it is difficult to sustain these as independent categories .
4 The notion seems a useful one , though it is difficult to confirm these settings scientifically .
5 It is difficult to reconcile these two interpretations .
6 But it is difficult to see these factors as amounting to an absolute restriction when put against the equally well recorded government support for overcapacity and inefficient working .
7 It is difficult to evaluate these innovations .
8 It is difficult to relate these mortality figures to the good initial prognosis that patients with sub-endocardial infarctions enjoy .
9 However , since the majority of rapes are not reported to the police , it is difficult to interpret these figures .
10 It is difficult to believe these comments refer to the same Report as that evaluated in a balanced leader in the Independent ( 16 November 1988 ) under the headline ‘ A blow for literacy ’ .
11 In practice it is difficult to locate these points , as the foot of the old cliff ( O on Fig. 9.18 ) may be obscured by talus or , more often , modified by erosion , in which case it may have been at A and the former cliff be represented by AH .
12 In infections with adult worms , the eggs will be found in faeces , but since it is difficult to distinguish these from Heterakis eggs , confirmation must be made by post-mortemm examination of a casualty when the large white worms will be found .
13 In the UK , and in most European countries , it is difficult to overcome these problems .
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