System up time indicates the elapsed time since the device was last restarted, including controlled firmware reloads as well as any unexpected device restarts.

系统运行时间表示自设备最近一次重启后经过的时间，包括受控制的固件重新加载和所有意外的设备重启。

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By that time the new system should be up and running.

到那时这个新系统应该会运转起来了。

《牛津词典》

It's a complex system wherein data is copied to multiple intermediate devices, usually to speed up access to files when millions of people are trying to access the service at the same time.

这是一个复杂的系统，数据被复制到多个中间设备，通常是为了在数百万人同时试图访问服务时加快文件访问速度。

youdao

Soil was being eroded and wasted along the Eastern seaboard, and they were using up the great soils of the Mississippi Valley and over time that slave system just somehow wasn't going to work out.

东部沿海地区的土地因被侵蚀而荒废掉,密西西比河谷地区的土地资源即将被耗尽,但就在这种情况下,奴隶制依然能维持南方的经济

耶鲁公开课 - 美国内战与重建课程节选

Or you get a cold, the cold virus takes hold, the viruses start replicating inside of you and it takes some time for immune system to gear up to eliminate it, so we're used to thinking about responses that take some time.

或者你得了感冒,感冒病毒扎根在你的身体中,病毒开始在你体内复制,免疫系统需要一定时间做好准备去消灭它,所以我们曾认为免疫反应需要一定时间

耶鲁公开课 - 生物医学工程探索课程节选

This means that if energy is required on a constant basis then the system needs to be backed-up by conventional sources of power 73% of the time, and there are days when the back-up system is required for more than 90% of the time (In Germany, the industry association insists that renewables uptime averages 10%).

FORBES: Why "Green Fossils" Matter So Much To Africa's Energy Future

Microsoft has at last made it impossible to delete crucial system files, and if you do foul up, System Restore lets you turn back time.

CNN: Cutting Edge: Into The New Millennium

The Sony PS4 will have no boot-up time according to system architect Mark Cerny.

FORBES: Move up http://i.forbesimg.com t Move down