Example sentences of "at [noun] when it [is] [verb] " in BNC.

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1 The delay and uncertainty over the fate of Challenger 's principal cargo , the tracking and data relay satellite , which is now aloft but in the wrong orbit , means that Europe 's Spacelab may have to operate at half-speed when it is launched in September .
2 Many of us laugh at prejudice when it is presented to us in someone else .
3 The only bird that regularly directs missiles at other species is the Australian brush turkey , which kicks sand and stones at lizards when it is competing with them for food .
4 Its heroes are household names and millions of pounds are at stake when it is staged .
5 The country 's largest carrier is not keen to face new battles at home when it is trying to spread its wings overseas , by buying TWA 's slots at Heathrow .
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