前处理过程和酸水解即昂贵又高污染。的翻译：Pre-treatment processes and acid hydrolysis is expensive and high pollution. 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

And acid hydrolysis pre-treatment process is expensive and highly polluting.

Pre-treatment processes and acid hydrolysis is expensive and high pollution.

The first treating processes and the acid hydrolysis namely expensive also are high pollute.

正在翻译，请等待...

Pre-treatment processes and acid hydrolysis is expensive and high pollution.