Example sentences of "[adv] [adj] [noun] over a period " in BNC.
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1 | Ian Wyllie , who studied cuckoos extensively in Cambridgeshire reed-beds , saw it just three times over a period of six years after thousands of hours of observation . |
2 | The second type of endurance training uses nearly flat-out effort over a period of up to three minutes . |
3 | He had experimented in administering the powder to about fifty people over a period of five years ‘ and never failed in the cure ’ , except in some cases of severe or chronic ague , which required the addition of some grains of quinine . |
4 | Hugh Dalton , the chancellor of the exchequer , was already worried by such a prospect , not least because of the damaging electoral implications of even greater austerity over a period of time . |
5 | And tragically , in the past few weeks we have seen the US and its Allies carry out over 44,000 sorties over a period of 20 days against the people of Iraq . |