agreed-upon procedure的意思|示意

All guests should advise hotel cashier upon departure and follow the agreed-upon procedure for payment.

所有客人在离开酒店前都必须根据协议程序付款并办理离店手续。

A procedure normally followed in a business situation, and which may carry as much moral and legal right and obligation as an agreed-upon procedure.

企业通常情况下遵守的规程，与一个约定规程一样，它规定了道义上的和法律上的权利和义务。

This is where the interface comes into picture which maintains all the procedure declarations and data types that client and server agreed upon.

这就是接口起的作用，接口维护客户机和服务器都认可的所有过程声明和数据类型。