As a system administrator, you maintain a number of management systems, so the automated upgrading system is essential.

作为一个系统的管理者，可能要维护好多个管理系统，所以需要一个统一的自动化升级系统。

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The countries adopting unilateral measures share the opinion that the current international tax system needs upgrading.

采取单边措施的国家都认为，现行的国际税收制度需要升级。

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The penalty is more expensive satellites and greater difficulty in upgrading the system later.

ECONOMIST: Staying in touch

He knows that upgrading his system will cause headaches.

FORBES: Are You Wasting Your Money On Tech?

Rather than buy another multi-thousand-dollar home entertainment system to recapture that new quality, I can invest a small sum in upgrading my current system back to mint condition.

FORBES: Your 30-Second Pitch: Speak Not in Code -- Talk as a Human