他们发明并发展了这个计算系统的翻译：They invented and developed the computing systems 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

They invented and developed the computing system

They invented and developed the computing systems

They invented and have developed this computing system

正在翻译，请等待...

They invented and developed the computing systems