用英语写回信，要求是对博士导师的follow up，并且提醒他上封邮件携带的附件10.12号要过期，希望他提前下载并且对于research proposal提意见

Subject: Follow-up on Application and Expiry of Attachments

Dear Professor [Last Name],

I hope this email finds you well. I am writing to follow up on my previous email regarding my application for the doctoral program under your supervision. I am very much interested in the research opportunities and the academic environment at your esteemed institution.

Firstly, I would like to remind you that the attachments I sent along with my initial email, including my research proposal and other documents, will expire on October 12th. I kindly request that you download them at your earliest convenience to ensure you have access to the most current version of my application materials.

I understand that you mentioned there will be a slot available next year and that the process will begin in March. I am eager to contribute to your research team and believe my background aligns well with the direction of your lab. I would greatly appreciate any feedback you could provide on my research proposal at your earliest opportunity. Your insights would be invaluable in helping me refine my project and better align it with the expectations of your program.

I am looking forward to the possibility of discussing my application further and learning more about the doctoral program. Please let me know if there is any additional information you require from me or if there are any further steps I should take at this stage.

Thank you once again for considering my application. I am excited about the prospect of joining your research group and contributing to the academic community.

Best regards,

[Your Full Name] [Your Contact Information]