Example sentences of "[be] [adv] [verb] at a time " in BNC.

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1 For a start , though it 's called ‘ single-frame ’ , two frames are often shot at a time , for economy .
2 At present , some centres use photographic records to follow patients with clinically atypical naevi , on the assumptions that only lesions that show evidence of progressive change need to be excised and that such change can be clinically detected at a time when evolving melanomas are thin and curable by local excision .
3 All the nineteenth-century conventions of comedy pointed to the need for universality and in any case Chaplin 's own personal inclinations must have pulled him back from being sectionally committed at a time of class warfare .
4 As it takes about two years to convert an idea to law through our parliamentary system , new legislation is often implemented at a time when the circumstances which gave rise to the idea have substantially altered .
5 The author realised that she was wrongfully dismissed at a time when the company needed her services .
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