usable value的意思|示意

"I would define value as useful and usable functionality delivered to the customer" [2].

“我认为所谓价值就是提供给客户的有用而且能用的功能”[2]。

Hence, the ratio of markup to value is extremely high, which means that a lot of XML parsing may be required to extract a comparatively small amount of usable data.

因此，标记与值的比例非常高，这就意味着提取相对较小量的可用数据将需要很多的xml解析。

An internal certificate has no usable value to a receiving application.

内部凭证没有接收应用程序能够使用的值。