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1. Oxford American Dictionary

   frozen zoo

   • n.
     a collection of DNA, eggs, and other tissue from endangered or extinct animals, stored at very low temperatures in liquid nitrogen

   • noun: frozen zoo, plural noun: frozen zoos

2. • 釋義

   n.

   名詞

   • 1. a collection of DNA, eggs, and other tissue from endangered or extinct animals, stored at very low temperatures in liquid nitrogen researchers collected ovarian and uterine tissue samples for storage in the institute's frozen zoo for study