Example sentences of "[adj] [num] years when [art] [noun sg] " in BNC.

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1 On a time-scale which may not coincide exactly with our present scientific calculations of geological time , they say that the cycle commences with a period of 1.7 million years when the power of the Life Force is immeasurably stronger and more evident in physical affairs than it is today .
2 In Phanerozoic time ( the time which has elapsed since the beginning of the Cambrian ) there have been three such ice ages , separated by intervals of a few hundred million years when the world enjoyed a more equable climate and lacked extensive polar ice caps .
3 There have been occasions over the past 30 years when the attendance in this House for my speeches has not been quite as large as it is today .
4 However , this Government have frozen , deliberately , purchase grants even in the past three years when the Minister has had funds at his disposal .
5 They date from the last ten years when an interest in colour , triggered by a visit to Egypt in 1982 , assumed a dominant position in her work .
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