animal experiment

例句：

1. 1. The scientists conducted an animal experiment to study the effects of pollution on wildlife.
   科学家们进行了一项动物实验，研究污染对野生动物的影响。
2. 2. The government banned all animal experiments in order to protect animals from unnecessary suffering.
   政府禁止所有动物实验，以保护动物免受不必要的痛苦。
3. 3.The researcher performed several animal experiments to gather data for their study.
   研究员进行了几次动物实验，以收集数据进行他们的研究。