如果印第安纳可以有两个时区，那么比它大180倍多几百万人的俄罗斯没理由不能更改时钟以便让最东边儿的居民高兴一下。
If Indiana can have two time zones, there's no reason that Russia, 180 times larger and with many millions more people, can't change its clocks to please its easternmost citizens.
点击这个工作条目右角上的时钟图标，将估算时间更改为4小时(图19)。
Click the clock icon in the right corner of the work item, and change the estimated time to 4 hours (Figure 19).
Metronome中的GC工作是基于时间的，而对硬件时钟的任何更改都可能导致难于诊断的问题。
GC work in Metronome is time based, and any change to the hardware clock could cause hard-to-diagnose problems.
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