the part of a business that does not meet and deal directly with customers 後端业务（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. 他们将大部分的後端业务外包了出去。
the end of a project, a process, an investment, a period of time, etc. 後期；结尾◆Your bank may add extra payments on the back end of a loan. 在贷款後期，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。
() the part of a computer system that processes data 後端（处理数据的计算机系统部分）➡front end , server