Usage charging means billing a client or department based on system resource, system administrator time, or raw material (for example, printer paper) usage.

使用收费表示根据客户或部门对系统资源、系统管理员时间、或者原始材料(例如，打印纸)的使用情况进行收费。

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Cheque paper: a type of security paper. The body of which has been chemically treated to prevent alteration or fraudulent usage.

支票纸：是保密纸的一种，纸身经过化学处理，防止改或欺诈性的使用。

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That office paper usage will continue to be flat or slightly decline, with larger forces like the economy having more impact than mobile.

FORBES: Dreaming Of The Paperless Office? Mobile Isn't Your Savior