Example sentences of "[noun sg] about 20 " in BNC.

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1 The stolen van was spotted by a patrol car about 20 miles away in Rowstock .
2 The synaptic zones are without glial processes , the participating axon branches or dendrites are separated by a synaptic cleft about 20 nm wide , and the presynaptic knob contains mitochondria , glycogen granules and vesicles .
3 Two of the drovers took a strip of white cotton about 20 yards long and held it across the top of the quay , and it did for a fence .
4 When he started ‘ writing in earnest ’ , after the war when he also joined a club for the hard of hearing which had a great effect on his life , he at first concentrated on prose , turning to the medium of poetry about 20 years later .
5 Poecillopsis gracilis — The Porthole Livebearer which is common at this location was Pat and Derek 's first wild livebearer species which they bought from a local aquarium shop about 20 years ago .
6 He hit me on my bum about 20 times . ’
7 Now he was down in Somerset : dairy , herding of course , Friesians , and milking about 20 cows , three of us milked in the morning and two in the afternoon , a long cow shed , of course my heart came in my mouth then , under the knees of all the cows .
8 Last weekend about 1,000 troops of the non-communist Khmer People 's National Liberation Front ( KPNLF ) attacked military outposts along Route 69 , which runs parallel to the Thai border about 20 miles inside Cambodia .
9 Later the same day about 20 soldiers wearing the green berets of Eyadema 's presidential guard briefly held the broadcasting station , before leaving at nightfall .
10 Recently he was called up by the Customs and Excise about 20 videos ( mostly tapes from TV ) a friend had sent him from America .
11 He went on to obtain plates centred on about 1300 selected areas scattered uniformly over 75 per cent of the whole sky , on which he was able to recognise some 44000 galaxies down to apparent magnitude about 20 .
12 ‘ I was in the water about 20 minutes before being fished out into a lifeboat and eventually two destroyers arrived to take the survivors to Reyjavik .
13 However , there was a significant minority of floating voters : on average about 20 per cent of the electorate .
14 The £200 driving lessons , which last ninety minutes , average about 20 miles an hour , quite fast enough when trying to sort out gears , brakes and throttle .
15 13 this is replaced by a full boss and an elongated triangle about 20 cms .
16 In the first ( for ileocolonic transit ) , a Tygon cannula ( external diameter : 1.22 mm ; internal diameter : 0.76 mm ) was placed into the distal ileum about 20 cm from the cecum , the cecum was opened , and the ileocaecal segment was rinsed of any residue with warm saline ( 37°C ) .
17 The ICRDG has invited earth scientists from the geological surveys of almost all the developing countries to spend eight weeks in Cyprus , living and working alongside its members ; during the summer about 20 will come .
18 Apply a lip moisturiser or lip balm about 20 minutes before you want to apply lipstick .
19 On Sunday we had a successful open-door schooling , visiting an ‘ advanced Tachai-type ’ commune about 20 miles from Nanking , in the rice growing area .
20 In the last ten years he has used a prostitute about 20 times .
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