Example sentences of "[adj] [verb] for [adj] periods " in BNC.

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1 The minor claim is simply that if you it 's an empirical claim it says if you look at the fossil record , and you look in detail at the changes in the fossils , what you observe is not continuous steady change , but you see what they call stasis — that is nothing much happening for long periods of time , perhaps for millions of years , and then rather suddenly changes taking place .
2 Because we are realising what television can not admit ; that nothing much happens for long periods of time .
3 In addition to their role as refuse removers , these crustaceans also provide a valuable food source for some fish , particularly Mandarins , which are next to impossible to maintain for long periods in aquaria which are not well stocked with inverts and living rock .
4 He was very tired and found it hard to concentrate for long periods of time .
5 We found the machine was fairly comfortable to use for long periods , but the high body did make it slightly awkward to control in tight corners .
6 All need annual pruning but many flower for long periods and come in lots of colours .
7 You body wo n't turn as much as it did before , you get tired more quickly , you 're less able to concentrate for long periods and have to allow for more errors .
8 You will need to be able to work for long periods with a high degree of accuracy , and have really good eyesight .
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