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clean air ['kli:n 'ɛə]
life.sc., environ. air pur
 English thesaurus
Clean Air ['kli:n 'ɛə]
USA CA
Clean Air: 27 phrases in 10 subjects
Agriculture1
Electronics1
Environment13
Forestry1
General2
Industry2
Law1
Municipal planning2
Natural resourses and wildlife conservation1
Transport3

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