中国经济相比30年前已经有了很大进步的翻译：China's economy than it was 30 years ago there has been a great improvement 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

Than 30 years ago, China's economy has made great progress

China's economy than it was 30 years ago there has been a great improvement

The Chinese economy compared for 30 years ago already to have has been very greatly progressive

China's economic as compared with 30 years ago, it already has a lot of progress

China's economy than it was 30 years ago there has been a great improvement