在4月27日，美国、加拿大、欧洲以及日本承诺将通过合作使动物替代实验有实质性进展。
On April 27th America, Canada, Europe and Japan promised to co-operate on validating alternatives to animal testing.
通过列举一些有关合作学习的实验、实践支持了文章的观点。
It cites some experiments in cooperative learning in the end of the thesis to support the point of view.
通过教学实验，对“分层合作学习法”在跨栏跑教学中的设计与运用进行了理论与实践探索。
Through the teaching experiment, the paper studies the basic theory of the design and practice of the study style of different categorization and cooperation in hurdle teaching.
应用推荐