Comodo time Machine (CTM) is a powerful system rollback utility that allows users to quickly restore their computers to an earlier point in time.

魔岛时间机器(澳门电讯)是一个功能强大的系统恢复工具，允许用户，尽快恢复他们的电脑的时间到一个较早点。

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The ROLLBACK command removes the changes and exits to the operating system.

ROLLBACK 命令将删除更改并退出至操作系统。

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The rollback of that business, and the institution of the system we have today, began with blood.

这种商业模式的倒退，以及当今的这些制度和机构，都是从血液买卖开始的。

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However,to become more competitive in the global economy, the government is trying to rollback its system of ethnic preferences, which requires companies to reserve 30 percent of their shares for Malays.

VOA: standard.2010.02.24

But that stance prompted producers to suggest a rollback in the long-standing residuals system whereby writers get paid for repeat airings of their work, angering writers.

NPR: Hollywood Writers May Strike over New Media

At the same time, computer makers such as Dell and HP have been exploiting clauses in the licensing terms that let them rollback machines with Vista pre-installed to the older operating system.

BBC: Downgrade plan for Windows 7 PCs