Example sentences of "[pron] is often [adj] [verb] the " in BNC.

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1 When writing the formulae of both covalent molecules and ionic compounds , it is often useful to use the valency of an atom , ion or group of atoms .
2 It is often effective to draw the bars in three dimensions as this lengthens the visual impact .
3 With a runway it is often possible to use the centre line and a selected spot .
4 Furthermore , it is often possible to replicate the artefacts in order to test the hypotheses about a particular object , although in some cases several different technological methods might arrive at an identical end-product .
5 It is often possible to see the vestigial remains of rear limbs on these large snakes .
6 By plotting the position of stray finds on a map , it is often possible to pinpoint the archaeological site from which they came .
7 On the other hand , it is often possible to compare the degrees of falsifiability of laws or theories .
8 If the patina has been stuck on , then it is often possible to detect the organic binder or glue quite easily , either by application of various solvents , or by exposure to ultra-violet radiation .
9 It is often possible to bale the centre of the field a day before the edges and double row .
10 It is often possible to gain the services of a competent student for a year or two , either as an organist or as an organ scholar .
11 It is often possible to identify the characteristic eggs from a faecal sample , but regular treatment against this and other similar parasites is usually deemed preferable .
12 For example ‘ the ’ is signalled by two fingers placed together in the shape of a T , touching the ear indicates ‘ sounds like ’ , patting your hand on your head means ‘ name ’ , and it is often helpful to indicate the number of words by fingers .
13 Thirdly , it is often helpful to consider the opposite — as Mitchell does here .
14 However , it is often impossible to locate the rogue .
15 The snag with this is that it is often impossible to avoid the triggering events altogether and in any case it might be better to face them squarely and control your reactions to the events rather than the events themselves .
16 Where the size of the board is not critical , it is often preferable to draft the p.c.b .
17 It is often preferable to offer the necessary quantity of food as two meals , morning and evening , so the dog 's stomach remains fuller over a longer period .
18 This is satisfactory enough , though it is often necessary to perch the tripod on top of a platform or a solid table , as otherwise you will have to be something of a contortionist when looking at an object high in the sky ( incidentally , the same is true of a small refracting telescope ) .
19 The term ‘ rich ’ implies that the pictures should contain a wealth of information relevant to the study ; however , trying to include too much detail can result in them becoming extremely cluttered , and it is often necessary to summarise the detail ( using the interview analysis technique if required ) and redraw them as the study progresses .
20 In short , it is often necessary to alter the letter of the original in order to preserve its spirit .
21 If the accesses on a file are completely random , it is often sensible to sort the accesses into cylinder address sequence and minimize individual seek times .
22 It is often sufficient to break the homophony in one voice only to give this added touch of interest .
23 This work is emotionally costly , as it is often painful to watch the struggle to maintain independence and a sense of self-worth .
24 It is often difficult to anticipate the time required to undertake a search .
25 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 .
26 As a result it is often difficult to analyse the errors of a probabilistic system in an effort to improve its performance .
27 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 .
28 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 .
29 Membership is gained consciously or unconsciously and it is often difficult to determine the time when a person becomes a member .
30 As in the public sector , it is often difficult to ascertain the value of the individual 's marginal product ( e.g. , on an assembly line ) .
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