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1. Oxford American Dictionary

   contrail

   • IPA[ˈkänˌtrāl]

   美式

   • n.
     a trail of condensed water from an aircraft or rocket at high altitude, seen as a white streak against the sky.

   • noun: contrail, plural noun: contrails

2. • 更多解釋

   contrail

   • IPA[ˈkɒntreɪl]

   英式

   • n.
     a trail of condensed water from an aircraft or rocket at high altitude, seen as a white streak ...

   Oxford Dictionary