实验

experiment;test
许多人不赞成在动物身上做～。Many people do not like the idea of experiments on animals./有人认为在动物身上做～引起不必要的痛苦。Some people feel that experimenting on animals causes unnecessary sufferings./做～do(or perform,carry out,conduct)an experiment/科学～scientific experiment (or experimentation)/～证明proved (or shown)by experiment