The biggest difference between animals and human beings is that human beings hold the possession of complex emotions.

人类与动物之间最大的区别在于人类拥有复杂的情感。

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Clone made the main steps of extraction of a cell from human or animals, through a complex process of slowly training and maternal identical organisms.

克隆制作的主要步骤是从人体或动物身上提取一个细胞，经过复杂的过程慢慢培养和母体一模一样的生物体。

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Comparing human emotions to animals' may be like comparing color vision to black-and-white-they're the same concept, but the former is immensely more complex.

把人类的情感与动物的相比，大概就如同彩色视觉与黑白相比一样一它们在概念上是一样的，但人类的情感要复杂得多。

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Despite the EU's 2009 ban, cosmetics firms were allowed to continue testing on animals for the most complex human health effects, such as toxicity which might lead to cancer.

BBC: EU bans sale of all animal-tested cosmetics

"Findings on the genetics of a particular nematode worm may not be directly relevant to the complex process of ageing as it happens in higher animals such as the human, " the association added.

BBC: Antioxidants 'cannot slow ageing'