所有的理论都来源于实践，并反过来为实践服务的翻译：All the theory comes from practice and in turn serves practice 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

All the theory comes from practice, and in turn serves practice

All the theory comes from practice and in turn serves practice

All theories all originate from the practice, and in turn serves for the practice

All sources are all in the theory and practice, in turn, services for the practice

All the theory comes from practice and in turn serves practice