Example sentences of "[prep] years [prep] [art] time " in BNC.

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1 In order to fully understand an alarm reaction it is useful to think back many thousands of years to the time of the caveman .
2 He also keeps the same brigade for years at a time because staff turnover in contract catering is not as rapid as in hotels and restaurants .
3 Often they are left unused for years at a time , except , that is , for all those informal human activities , like adventure play , gypsy encampments , bonfires , dumping rubbish , and grazing goats , that are not allowed where the grass is mown and the trees are carefully planted .
4 Though a particular district might remain untouched for years at a time , there was always disease somewhere on the island .
5 Even in their heyday they had been fluid entities which could be dormant in specific areas for years at a time , but the decline at the turn of the century was much more widespread than earlier fluctuations .
6 The eggs of most species are small , and although they do not contain a large supply of nutrients they remain viable for years at a time , mainly because the tiny embryo is in a resting state .
7 In any well-run firm the agreement will not be allowed to remain under lock and key unlooked at and unconsidered for years at a time .
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