在给定时期内公司为保留现有顾客所花费的金钱。

Retention cost The amount of money a company has to spend in a given period to retain an existing customer.

youdao

销售收入。有时也称它为顶线，它是在给定时期内的销售收入总和。

Sales Revenue This is sometimes also called the top Line and is the amount the sold in a given period of time.

youdao

首先是在给定时期内访问该服务器的预期用户数量；这就是您对该门户所施加的负载。

First is the number of users that you expect will access the server within a given time period; this is the load you are putting on the portal.

youdao