单词	selective breeding
释义	selective breeding noun : the process of modifying the characteristics of living things especially to enhance one or more desirable traits by selection in breeding controlled by humans After about three years of selective breeding, their company, Cavendish Game Birds, was able to deliver quail that consistently dressed out to seven or eight ounces. Warren Schultz Selective breeding continues in an attempt to enhance the human use of this economic plant against a background of disappointingly low rubber content … John M. Miller and Ralph A. Backhaus Fixed through selective breeding, traits could vanish over several generations if people became careless in choosing their dogs' mates. Mark Derr called also artificial selection Word History First Known Use 1863, in the meaning defined above
随便看	five-and-dime five-and-dimes five-and-ten five-and-tens five-card stud five-centered arch five-corners five-corns five-day week five-eighth five-eighths five-em space five-figure five-finger five-fingered creeper five-fingered ivy five-fingered Jack five-fingered root five-flowered gentian five-hole five-leaf five-leaved chaste tree five-leaved ivy five-leaved pine five-lined lizard

英语词典包含469781条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。