This experiment was harmless to the animals.
这个实验对动物无害。
It's extremely cruel to perform an experiment on live animals.
对动物活体进行实验是一件极其残忍的事情。
Which raise a question: whether human beings should take experiment animals do?
由此引发一个问题：人类是否应该拿动物做实验？
不要在动物身上试验。
He argues against the use of animals in the experiment.
他提出理由反对在试验中使用动物。
Some people think that it's cruel to experiment on animals.
有人认为用动物来做实验是很残忍的。
Animals Are Not Ours to Eat, Wear, Experiment On, or Use for Entertainment.
动物不是用来被吃、穿、试验或做为娱乐的。
Arrange for experiment to animals in each group by orthogonal design.
各组动物根据正交设计安排实验。
Arrange for experiment to animals in each group by design of randomized block experiment.
各组动物根据随机分组实验设计安排实验。
Some other animals are used in the scientific experiment.
其他一些动物被用于科学实验。
In the past twentieth century, the number of animals for experiment greatly reduced.
在过去的20年中，用于科学实验的动物数量大大减少了。
In the past twentieth century, the number of animals for experiment greatly reduced.
在过去的20年中，用于科学实验的动物数量大大减少了。
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