[countable] the part of a business that does not meet and deal directly with customers后端业务（不直接与客户见面交易的那部分业务）◆They outsource much of the back end of their business.他们将大部分的后端业务外包了出去。the end of a project, a process, an investment, a period of time, etc.后期；结尾◆Your bank may add extra payments on the back end of a loan.在贷款后期，你的银行可以增加额外的还款额。◆Sales have improved since the back end of last year.自去年年底以来，销售量有所提高。 (IT 信息技术) the part of a computer system that processes data后端（处理数据的计算机系统部分）  ➡  front end , server