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1. Oxford Dictionary

   active transport

   • n.
     the movement of ions or molecules across a cell membrane into a region of higher concentration, assisted by enzymes and requiring energy.

   • noun: active transport

2. • 更多解釋

   active transport

   • IPA[ˌaktiv ˈtran(t)sˌpôrt]

   • n.
     the movement of ions or molecules across a cell membrane into a region of higher concentration, ...

   Oxford American Dictionary