Example sentences of "have long know " in BNC.

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1 Fishermen have long known of the association , and have traditionally used the presence of dolphins as a cue to finding schools of tuna .
2 For instance , people have long known that squeezing lemon juice on sliced fruits prevents them from turning brown , but until recently it was not known why lemon juice has this effect .
3 England have long known that concessions can be made against no team .
4 The M & S managers have long known and practised all this instinctively on their home ground : but that 's what happens when businesses move away from first principles .
5 It turns out that this does not have a simple answer , for there are many different kinds of ganglion cell ( as anatomists have long known ) , and when one records from them one finds that they carry different types of message .
6 We have long known , of course , that the White Chalk facies of late Cretaceous times extended all the way from Antrim in Northern Ireland , via England and northern France , through the Low Countries , northern Germany and southern Scandinavia to Poland , Bulgaria and eventually to Georgia in the south of the Soviet Union .
7 Ecologist editor Nicholas Hildyard commented : " We have long known that World Bank projects bring environmental catastrophe and suffering on a grand scale .
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