Example sentences of "[adj] at [adj] [noun pl] ' " in BNC.

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1 Perinatal mortality is lowest at 40 weeks ' gestation and does not increase until after 42 weeks , and then only slightly .
2 Both have contracts with the Company terminable at 3 years ' notice .
3 First , the thickness of the deposit steadily diminishes ; one which is ten metres thick close to the vent may be only twenty centimetres or so thick at twenty kilometres ' distance .
4 A nearly constant fraction of fetuses that are alive at 23 weeks ' gestation die each subsequent week , indicating that every fetus faces a random , but statistically predictable , risk of intrauterine death throughout pregnancy .
5 All of us are aware of the problems of someone who was living alone and struggling to maintain a large house , but I am genuinely surprised at Conservative Members ' enthusiasm for a benefit that is clearly not targeted .
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