The origin of most of our domestic animals will probably forever remain vague.
大部分家养动物的来源,也许会永远暧昧不明.
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Agricultural lands are those used for crop cultivation or grazing by domestic animals.
农业土地是用于作物栽培或家畜放牧的土地.
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Some other like sheep and dogs are kept by men and they are called domestic animals.
另一些像人们养的绵羊和狗,被称为驯养动物.
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随机选用了10条RAPD引物，采用3种商品taq DNA聚合酶体系，以5个不同物种的动植物总DNA为模板，进行RAPD扩增。
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Indeed , animals are capable of many emotional feelings , just like humans, some scientists say.
一些科学家说,事实上, 动物和人类一样是具有多种情感和情绪的.
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鸽子经常被视为很脏的鸟类和城市公害，但是它们最近刚刚被列入有能力帮助人类的动物行列中的一员。
四级真题- 2017年 12月 1卷 短文填空
A research on the anti-fatigue effect of Mistura trifoliate orange on the experimental animals
复方枳实合剂对实验动物的抗疲劳作用研究
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Scientists are attempting to compare features of extinct animals with living analogues.
科学家正试图把已灭绝动物的特征与现存类似动物相比较。
《牛津高阶英汉双解词典》
In animals, this consists of 2 principal components-thymic and bone marrow system.
动物的免疫系统由两个主要部分组成,即胸腺和骨髓系统.
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There is a tendency in some animals to throw back for several generations.
在某些动物身上,有一种每隔几代便出现返祖现象的倾向.
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In the single year, 80 AD the Emperor Titus staged the slaughter of 9,000 wild animals.
单单西元80年一年, 提图斯皇帝就演出九千头野生动物屠杀大戏.
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