Example sentences of "over a long period [modal v] " in BNC.

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1 That is , whether spaced out advertising — the " drip " — over a long period would work better than heavy advertising , the " burst " , concentrated into a short space of time .
2 A case report and clinical-epidemiological studies in patients who have misused anthranoid laxatives over a long period should be considered in a final risk assessment for colorectal cancer in man .
3 Firms with a sustained high level of exports over a longer period may provide further figures for consideration as a consistent exporter .
4 The examination of all the images produced during a particular period or of a selection of images over a longer period will often provide a good idea of how the relevant state or regime wished to represent itself .
5 Debt due for repayment within two years could be paid within five years , and debt due to be repaid over a longer period could be paid within eight years .
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