Example sentences of "[adv prt] at [adj] intervals " in BNC.

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1 The chain was faulty , and came off at regular intervals .
2 How come the V&A 's lift signs are still made of black chipboard with white plastic letters that drop off at regular intervals ?
3 He could hear vehicles moving along the road , dropping storm-troopers off at regular intervals as they started to search the forest .
4 Barratt soon made tubbing a semi-mechanical process though the dross still had to be scraped off at regular intervals ( perhaps for further jigging ) , and also the copper ore for further concentration .
5 The cars used to set off at one-minute intervals , originally starting at 9.00 p.m. on a Saturday but that was changed in 1949 to midnight , .
6 One of the greatest of all sports car road races ever run , the Mille Miglia was first held in 1927 and , by tradition , cars set off at one-minute intervals from the centre of Brescia , raced down to Rome and returned .
7 She set her alarm clock to go off at hourly intervals throughout the night , but even before its first summons she was disturbed .
8 In ‘ random mode ’ , the time controller will switch an appliance on and off at random intervals during the four ON periods already set for the programme mode .
9 Even when the weather is too bad for astronomical observing , Alcock still wakes up at two-hourly intervals during the night to make meteorological observations .
10 My goggles ice up at regular intervals and I wipe them with my glove , afraid that I will miss the trail a groundless fear as the dogs follow the pack scent .
11 Unfortunately many clinicians use this approach in an incorrect manner and do not follow up at regular intervals .
12 The job of inspecting foster homes , which was supposed to be carried out at frequent intervals , was shared between the national office , regional committees and the provincial committees .
13 , Renewal lung function tests are to be carried out at regular intervals .
14 The account was then allowed to lie dormant while Yousefi collected the cheque books sent out at regular intervals .
15 Throughout the east Midlands ash trees were planted along the hedges , less often the elm , usually spaced out at wide intervals .
16 Eight companies consisting of twelve acts were sent out at ten-week intervals , and the actual length of engagement was twelve weeks .
17 Updating will be carried out at monthly intervals , usually between the 5th and 10th of the following month .
18 Each session is spaced out at monthly intervals .
19 Then they marked half the webs with artificial stabilimenta and came back at two-hourly intervals to check on the longevity of the webs .
20 Looking back at regular intervals to see if the stranger was following , eventually they reached the access to the street but the guide was astonished to find the man had vanished into thin air .
21 Okay , and , and we will be asking you back at regular intervals .
22 Children who have been integrated into mainstream schools can return at any time for help and are called back at six-monthly intervals for checks .
23 ‘ County ’ men were transferred around at short intervals , while we were static in the city , never moving more than a mile or so between the three divisions to undertake real ‘ city work ’ .
24 In fact , it is n't in a theatre at all — it 's put on at irregular intervals by a group of lawyers in the sedate and sheltered surroundings of the Temple , and it 's called Seminars for the Expert Witness .
25 A study of rock samples from the right and left of the chasm , has shown that its magnetisation switches round at regular intervals .
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