Example sentences of "are frequently referred " in BNC.

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1 They are frequently referred to as ‘ black bastards ’ , or some variant thereof , by young Protestant children .
2 In south Wales these manor houses were often heavily fortified and , because of this , are frequently referred to as castles .
3 Such corrosion deposits are frequently referred to by names implying that the textile is replaced by corrosion products .
4 Fortunately , pre-school visually handicapped children are frequently referred to the advisory services by the relevant medical services and this is helpful , since early intervention programmes can then be formulated involving parents and teachers and the possibility of nursery or playgroup provision explored .
5 These persons are frequently referred to as " regular casuals " , although the term is also sometimes used to refer to people in the second category .
6 These non-relevant documents are frequently referred to as noise Notice that it would be possible to improve recall until every relevant document is retrieved by scanning the entire document collection , but such perfect recall ( that is , retrieving every relevant document ) would be accompanied by a drop in the proportion of relevant documents found .
7 Events are frequently referred to as transactions .
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