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1. Oxford Dictionary

   dual

   • IPA[ˈdjuːəl]

   英式

   • adj.
     consisting of two parts, elements, or aspects；(in some languages) denoting an inflection that refers to exactly two people or things (as distinct from singular and plural).
   • n.
     a dual form of a word.；the dual number.
   • v.
     convert (a road) into a dual carriageway

   • noun: dual, plural noun: duals

2. • 釋義
   • 相關詞

   adj.

   形容詞

   • 1. consisting of two parts, elements, or aspects their dual role at work and home dual-language texts in English and Italian
   • ▪ (in some languages) denoting an inflection that refers to exactly two people or things (as distinct from singular and plural).
   • ▪ (in an aircraft) using dual controls a dual flight
   • 2. (of a theorem, expression, etc.) related to another by the interchange of particular pairs of terms, such as ‘point’ and ‘line’.

   n.

   名詞

   • 1. a dual form of a word.
   • ▪ the dual number.
   • 2. a theorem, expression, etc., that is dual to another.

   v.

   動詞

   • 1. British convert (a road) into a dual carriageway though there are no plans to dual the road, a public consultation on the A64 is set to start before the end of the year

   dual control

   • adj.
     (of an aircraft or vehicle) having two sets of controls, one of which is used by the instructor: a dual-control pilot trainer
   • n.
     two sets of controls in an aircraft or vehicle.

   Oxford American Dictionary

   dual control

   • adj.
     (of an aircraft or vehicle) having two sets of controls, one of which is used by the instructor: a dual-control pilot trainer
   • n.
     two sets of controls in an aircraft or vehicle.

   Oxford Dictionary

   dual heritage

   • n.
     the fact of having parents from different ethnic or cultural backgrounds.

   Oxford American Dictionary

   dual-purpose

   • adj.
     serving two purposes or functions: a dual-purpose hand and nail cream

   Oxford Dictionary

   dual heritage

   • n.
     the fact of having parents from different ethnic or cultural backgrounds.

   Oxford Dictionary

   dual carriageway

   • n.
     a road with a dividing strip between the traffic in opposite directions and usually two or more ...

   Oxford Dictionary

   dual-use

   • adj.
     (of technology or equipment) designed or suitable for both civilian and military purposes.

   Oxford Dictionary

   dual nationality

   • n.
     citizenship of two countries concurrently: many of the Lebanese living in West Africa have dual nationality

   Oxford Dictionary

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3. • 更多解釋

   dual

   • IPA[ˈdo͞oəl]

   美式

   • adj.
     consisting of two parts, elements, or aspects: their dual role at work and home
   • n.
     a dual form of a word.

   Oxford American Dictionary