Example sentences of "[verb] [adj] [prep] a long period " in BNC.

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1 So if y if the chemicals will do that over a long period of time to rubber , think what it would do to your skin .
2 In this way , the mother provides her baby with more food over the period of its development than she would be able to pack into a single egg , and what is more , she can do this over a long period instead of being compelled to produce it all at one moment .
3 Cessation of growth is most likely to result from starvation , which may arise because : the whelks eat out their food supply , or the supply fails for some other reason ( perhaps as a result of pollution Bryan ( 1969 ) ; wave action dislodges the whelks and transports them away from their food supply , or prevents them from feeding in some other way ( Cowell and Crothers , 1970 ) ; the temperature drops so low that the whelks become inactive for a long period ( Feare , 1970a ) .
4 The surrounding catchment area at first contributes little but clear run-off , and the lake water remains oligotrophic for a long period .
5 It is often preferable to offer the necessary quantity of food as two meals , morning and evening , so the dog 's stomach remains fuller over a longer period .
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