Example sentences of "[adj] is known to be " in BNC.

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1 The efficacy of speed limits thus depends on drivers ' self-discipline , but this is known to be lax , particularly as modern cars are neither designed nor advertised to encourage low-speed driving .
2 This is known to be German fertiliser manufacturer Hermann Schnabel , whose consignment of fourteen paintings included the cover lot , ‘ La Loge ’ by Renoir .
3 This is known to be a life threatening condition and antibiotic treatment was started while awaiting bacterial cultures of the biopsy specimens and gastric contents .
4 With halogen atoms X the initial products are usually XOO or XOOX , though the stable form of ClO 2 is known to be OClO .
5 The same is known to be true of the reel-to-reel tapes favoured by the older mainframe computers .
6 and idiopathic anorectal incontinence , in which the intrinsic innervation of the internal anal sphincter is known to be abnormal .
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