Example sentences of "[prep] [be] [vb pp] for several [noun pl] " in BNC.

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1 Polar plants must be capable of being frozen for several months each year , and to undergo repeated freeze-thaw cycles throughout the growing season , even at the height of summer .
2 What is certain is that he carried the legend of a king or emperor waiting to be reborn for several centuries , just as the British King Arthur has done .
3 Life went on , and pottery and other artefacts continued to be made for several decades at least .
4 Antibiotics are also prescribed for acne treatment and need to be given for several months at a time to be effective .
5 This enables oxygen to be stored for several minutes , and during prolonged periods of submersion an accessor valve between the heart ventricles can be opened to bypass the function of the lungs .
6 Many early stations were simply large barn-like structures , a form which was to be used for several decades .
7 Resigned to being detained for several minutes , Melissa forced herself to be pleasant , making suitable replies to his comments on the weather and agreeing that it was a bit unsettled , that frost was still likely to be a problem but was only to be expected at this time of year .
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