Example sentences of "[noun sg] is [adv] difficult [verb] [coord] " in BNC.

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1 Criminal fraud is notoriously difficult to establish and the evidence required to do so needs careful and skilled assessment .
2 The essential driving force is always difficult to define but the one thing that has struck me about is his intolerance of injustice wherever it presents itself .
3 The homology of a particular vein is often difficult to determine and resort has to be made to comparison with allied forms ( including fossils ) , which exhibit transitional stages in reduction , or to a study of the preceding tracheation .
4 At least with this disease there is no doubt as to its existence , although the causative organism is as difficult to grow and identify as that of chancroid .
5 The paradox here is that this variable is very difficult to access and would not be accessed at all if our field methods and analytic methods were inadequate ; yet , the variation has strong social meaning within the community .
6 Today , rambutans ( Nephelium lappaceum , Sapindaceae ) are distributed this way , growing up around deserted encampments of forest people in the Malay Peninsula , and several other fruits gathered there can only be swallowed as the flesh is either difficult to remove or the seeds are too fiddly to extract ( as in blackberries , blackcurrants and tomatoes in modern society sewage farms raise good tomato plants ) : for example the mata-kuching ( Dimocarpus longan ) and the rambai ( Baccaurea motleyana , Euphorbiaceae ) .
7 Evidence on this subject is extremely difficult to gather and interpret .
8 Information is usually difficult to obtain or unreliable in less-developed countries , and the problem is obtaining enough of it that is relevant and trustworthy .
9 Yet the book is rather difficult to read and the general reader may become discouraged after picking it up , despite the attraction of the illustrations and lay-out .
10 Informality in the water garden is more difficult to achieve and maintain satisfactorily .
11 This situation is very difficult to handle and it is worth trying to avoid early escalation of treatment with sulphonylureas and then progressing to insulin .
12 Such a shot is very difficult to judge and , therefore your better club choice may be a No.9 iron or even a No.8 iron .
13 Split peas are either yellow or green ; the green variety is more difficult to find but has a fuller flavour than the yellow and is therefore worth looking out for .
14 2.30:LEADING American hurdler Lonesome Glory is extremely difficult to assess but he is unlikely to appreciate these testing conditions .
15 An informal producer is always difficult to define but it is used here to describe an owner or an employee of a small-scale enterprise comprising less than ten people , operating from an impermanent site , under an ill-defined registration and tax scheme .
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