Example sentences of "but have been [verb] by [adj] " in BNC.

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1 The Eurasian steppes had its own bison , the wisent , which was almost extinct in the early decades of this century but has been rescued by captive breeding , and the small saiga antelope , with its peculiar dust-trap of a nose , in shape like an elephant seal 's .
2 The European Convention on Human Rights has not been made part of our law by statute , so it does not in itself create rights enforceable in our courts ; but having been ratified by this country it is binding on us as a matter of international law .
3 Mr Jenkin said he and other British politicians opposed to Maastricht had tried to get this message across in the run-up to the referendum , but had been defeated by those urging people to vote yes .
4 All three are inherent components of the natural earth surface processes that occur in arid and semi-arid regions but have been exacerbated by human activity .
5 Man-made fibres can be split into two groups , those that are derived from natural sources but have been transformed by chemical treatment , and those that are made totally from chemical sources and are therefore synthetic .
6 Japanese attempts to change Japan in the last 150 years have been both imitative and derivative , but have been accompanied by conscious and unconscious retention of indigenous characteristics and the ‘ simulation ’ of traditional Japanese attributes , plus a fair measure of originality .
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