in·ter·breed /ˌɪntɚ/
  (vt.)(vi.)(使)異種交配,(使)混種,(使)雜種繁殖
  in·ter·breed /ˌɪntɝˈbrɪd/ 動詞
  品種間雜交,變種間雜交
  In·ter·breed v. t. & i. To breed by crossing different stocks of animals or plants.
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  interbreed
       v : breed animals or plants using parents of different races and
           varieties; "cross a horse and a donkey"; "Mendel tried
           crossbreeding"; "these species do not interbreed" [syn: crossbreed,
            cross, hybridize, hybridise]
       [also: interbred]