这个实验对动物无害。

This experiment was harmless to the animals.

《柯林斯英汉双解大词典》

对动物活体进行实验是一件极其残忍的事情。

It's extremely cruel to perform an experiment on live animals.

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这两家公司都与一家对动物开展化学和药物实验的企业有关。

Both businesses were connected to a company that conducts medical and pharmaceutical experiments on animals.

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So the fact is those lab animals have a hard-wired preference for foods that are high in fat and high in sugar, primarily because of the energy density that those foods bring to one, and then the variety is important because you get a mix of nutrients.

事实上 实验动物对高脂肪高糖的食物,有着强烈的偏爱,而这种爱基于,该类食物能给我们提供高能量,多样性很重要,因为你能摄取多种营养

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选