Dear editor，

     I appreciate  you for your kind advice for my manuscript. To be honest, I have some difficulites in completing those amendments. The poor budgt is the trigger.

    When I　submitted this manuscript to your esteemed journal, I applied for Publication Fee Assistance , because my publication budgt can't afford the the publication fee , and even the  fee for professional scientific editing service is never in the plan.  

     This is the first time I send my research to Plos one, a famous and influential journal in China, I recognize the inevitable language problems, and my group will try our best to make a revision. We know this doesn't meet your  requirements, and if the withdrawal will happen in anticipation, All we can do is to accepte it.

     Thank you.

   Best wishes, 返回小木虫查看更多