英语翻译鉴于部门主管反映您近几个月的不良工作表现,如：未按工作指引要求进行产品检查确认,且在主管多次提醒沟通后,仍未改正

In view of your recent bad performance from your manager.For instance,not checking products as introduction though warned many times by your manager,still keep the same as to result in the quality issue,which led our company's economic loss.

the department superviser has reported your bad performance in your work in the last few months such as failing to check and pass the products according to the working guidance and causing quality problems despite repeated reminds from the superviser, resulting financial losses to the company.