Example sentences of "[vb -s] over a long period " in BNC.

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1 This is an acquired skill which develops over a long period .
2 Sometimes this happens over a long period , as a person finds himself constrained to attend a Christian place of worship , or drawn to read the Christian scriptures .
3 Unlike groups in laboratory studies , the work group is not created and then disbanded permanently ; it often survives over a long period of time .
4 One suggestion has been that the energy output of the Sun itself fluctuates over a long period .
5 This task of considering key moments can be a very valuable way of recapping from one session to the next when the drama extends over a long period , as it usually does once it becomes part of a project or topic work .
6 Where production extends over a long period as in construction industries and shipbuilding , measurement of work in progress has to be achieved by other means .
7 If it continues over a long period it could even lead to stunted growth .
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