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1. Oxford Dictionary

   jet stream

   • IPA[ˈdʒɛt striːm]

   英式

   • n.
     a narrow variable band of very strong predominantly westerly air currents encircling the globe several miles above the earth. There are typically two or three jet streams in each of the northern and southern hemispheres；a flow of exhaust gases from a jet engine.

   • noun: jet stream, plural noun: jet streams

2. • 釋義

   n.

   名詞

   • 1. a narrow variable band of very strong predominantly westerly air currents encircling the globe several miles above the earth. There are typically two or three jet streams in each of the northern and southern hemispheres brief bursts of cold air have been blown into the region by the jet stream
   • 2. a flow of exhaust gases from a jet engine.