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1. Oxford American Dictionary

   oleum

   • IPA[ˈōlēəm]

   美式

   • n.
     a dense, corrosive liquid consisting of concentrated sulfuric acid containing excess sulfur trioxide in solution.

   • noun: oleum

2. • 更多解釋

   oleum

   • IPA[ˈəʊlɪəm]

   英式

   • n.
     a dense, corrosive liquid consisting of concentrated sulphuric acid containing excess sulphur ...

   Oxford Dictionary