| 单词 | mule breeding |
| 释义 | > as lemmasmule breeding mule breeding n. ΚΠ 1882 Bazaar, Exchange & Mart 15 Feb. 175 ‘Sib breed’..is a word used in the North for the particular kind of canary employed for mule breeding, and really means that the birds have been bred in-and-in for a number of years. 1987 E. W. Burr Compan. Bird Med. vi. 33/1 Mule breeding, the production of sterile hybrids involving the canary and various finches, is very popular in Europe. < as lemmas |
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