milk cow是什麼意思？

使用者39007040682140912019-12-16 23:34:14

milk cow［英］［milk kau］［美］［mɪlk kaʊ］奶牛； 例句：

1。They took one milk cow， their pride， and their determination to just keep going somehow。 彼時他們有的只是一頭奶牛、滿心的自尊和繼續生活下去的決心。

2。While carrot and milk cow breeders had to rely on diffuse organic evolution， modern genetic engineers can use directed artificial evolution——purposeful design——which greatly accelerates improvements。 以前的胡蘿蔔和奶牛育種專家只能依賴漫無目的自然進化，而現代基因專家採用定向人工進化技術——有針對性的改造方案——可以極大地加速生物的改造程序。