Example sentences of "are so difficult [to-vb] " in BNC.

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1 PCBs are so difficult to destroy , that Rechem 's emission-monitoring systems are geared to detecting them on the grounds that if you destroy PCBs you destroy everything .
2 They are so difficult to diagnose .
3 Aromatic herbs are the ones most used in cooking ; no two are alike and some are so difficult to describe that even to say they are clove-like gives the wrong idea .
4 Rounding against the people of the North of England , ‘ whose warped sporting instincts are so difficult to understand , even when they are quite familiar ’ , Ensor condemned the commercialisation of sport , the sensationalism of football journalism , and the adoption of what he understood to be French and American coaching tactics , as a wholesale corruption of sporting values .
5 Given those records , is it any wonder that the winners of the French Open are so difficult to forecast .
6 Because the individual effects of acidification , ozone pollution , climate and insect and fungal attacks are so difficult to isolate , there is some disagreement among experts as to the cause of ill health in trees .
7 Well those things are so difficult to work out oh trying to get the li rid of the spaces there have that
8 Well you should y I I I er these la these these labels are so difficult to fit because if you say , Moving to the right , you then have to show me what policies the government is pursuing and you 'll probably find that I either play the part in thinking off argu arguing for them some years before some of my colleagues .
9 Britain grinds out almost five million tonnes of hazardous waste each year , of which about 63,000 tonnes are so difficult to store or treat that they are burnt at high temperatures here in Gwent or at one of three other centres : Ellesmere Port ; Fawley , near Southampton ; and the unfortunately named Killamarsh , near Sheffield .
10 This is also the reason why road accidents are so difficult to approach by training , safety on the road is much more to do with attitudes than with driving skill ( Parry , 1968 ) .
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