up to the time when的意思|示意

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。

Take-homes require thoughtful engagement which can lead to longer term stress as there is never a moment when the time is up.

参与在家的开卷考试时需要深思熟虑，因为这种考试没有时间期限，所以可能会导致长期压力。

How can I find time to exercise when I have to get up early in the morning and I'm exhausted by the time I get home in the evening?

我不得不很早就起床，晚上又精疲力尽地回到家中，如何才能找到时间锻炼身体？

France was the largest country in Europe up to the time of Napoleon, when it contained about a fifth of all Europeans and was the world's third-most-populous nation.

法国作为欧洲最大的国家可以追溯到拿破仑时代，那时候它囊括了欧洲人口的五分之一，是世界上第三个人口最多的国家。

When they sleep, they seldom lie down and sleep for minutes at a time, since it's difficult for them to get up again and it's dangerous in the wild.

当它们睡觉的时候，它们很少躺下来一次睡上几分钟，因为它们很难再起来，在野外这是很危险的。

There is no need to control the rotational position about the axis of the bore, because up to the time when the holes are drilled, it is symmetrical about that axis.

由于直至钻这些小孔时，工件都对称于大孔轴线，所以没必要控制围绕大孔轴线回转的位置。