In the computer centre, there are main frame computers, a very big kind.

在电脑中心，有一个非常大的电脑主机架。

If you have an external hard drive for your computer, you would connect it to your main computer with a cable.

如果您的计算机有外置硬盘驱动器，您可以使用电缆将其连接到主计算机。

After two nerve-wracking hours, New Horizons came back online, but mission control discovered that its main computer had rebooted, losing the entire core load and other critical data.

在令人紧张的两个小时之后，新视野号终于重新连线，但是主控中心发现主电脑已经重启，所有的核心载入和关键数据都已经失去。

So called benign or the harmless viruses might simply display a message like the one that infected items main computer system last Christmas with a season's greeting or malignant.

所谓的良性或无害的病毒可能只是简单地显示一个消息 像去年圣诞节受感染的项目主计算机系统的节日问候或恶性的。