/ˌsi: ef ˈsi: ||; ˌsi ɛf ˈsi/noun [C,U] chlorofluorocarbon; a type of gas found, for example, in cans of spray which is harmful to the earth's atmosphere 含氯氟烃；氟氯碳化合物 ☞Look at ozone layer. 参看 ozone layer。