Say you have a sheep farm with four sheep ovis aries , but you just bought two goats capra hircus and one german shepherd dog canis lupis familiaris 比方说，您有一个绵羊牧场，里面有四只绵羊（绵羊属） ，但是您刚刚买了两只山羊（山羊属）和一只德国牧羊犬（犬科犬属） 。
Ocular injury to icr mice from embryonated eggs of toxocara canis , which had been maintained in 2 % formalin for 14 months at 4 c , was evaluated by microscopic and pathologic assessments at 1 , 2 , 3 , 5 , 7 , 28 , 56 , 84 , 112 , 140 , 168 , 196 , 294 and 469 days post infection ( dpi ) 摘要本研究探讨将储存于2 %福马林液内，于4 c下保存14个月之犬蛔虫受孕卵感染小鼠第一天至第四百六十九天后，藉显微镜检视与病理学的研究评估孵化的幼虫对小鼠的眼部损伤情形。
Indeed , the constellations common in the sky from about 4000 bc to 2000 bc were taurus the bull , canis minor the dog , hydra the snake , corvus the raven , and scorpio the scorpion , all of which may be identified in the fresco from dura - europos , a standard hellenistic iconography 事实上，描绘天空的星座图从大约公元前四千年起到公元前二千年都十分普遍，公牛代表金牛座，狗代表小犬星座，蛇代表长蛇座，乌鸦代表乌鸦座，蝎子代表天蝎座，所有一切都可以在一些壁画上找到，一种希腊风格的肖像画法。
