我拥有全国计算机3级证书，精通计算机操作软件及办公室软件的使用。的翻译：I have a national computer level 3, proficiency in use of computer software and Office software. 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

I have a national computer 3 certificate, proficient in computer operating software and office software.

I have a national computer level 3, proficiency in use of computer software and Office software.

I have the national computer 3 levels of certificates, is skilled in the computer operation software and the office software use.

I have national computer Grade 3 certificate, versed in computer software and office software, use of the operation.

I have a national computer level 3, proficiency in use of computer software and Office software.