Example sentences of "but fortunately it is " in BNC.

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1 It would take the length of a book to provide an adequate commentary on Brian Leith 's book , but fortunately it is hardly required .
2 Complete avoidance is often very difficult , but fortunately it is rarely necessary .
3 That , I confess , is a spectacle which makes our boldest tempters uneasy but fortunately it is quite invisible to these humans .
4 It would certainly be naive just to assume that nerve cells are the same in molluscs as in people , but fortunately it is possible to rely on more than assumption .
5 There is no cure for this , but fortunately it is usually found that such processes do not occur in some fraction of photoionization events , so that the observed spectrum contains at least some intensity in an unshifted line , accompanied by various ‘ satellites ’ corresponding to the energy loss processes .
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