如果对所有组件使用相同的跟踪系统，您将被迫协调系统的多个输出，从而可能面临内部时钟不同步的风险。

If you're using the same trace system for all your components, you'll be left to tie together multiple outputs from systems with potentially unsynchronized internal clocks.

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这种类型的计时总是会发生变化，因此将获取时钟图像的import命令放在后台中运行，从而避免使用主要的shell脚本跟踪时间。

Timing of this type is always subject to some variation, so the import command to grab the clock image is run in the background, leaving the main shell free to keep time.

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若要确保精确，计时器应根据需要检查系统时钟，而不是尝试在内部跟踪所积累的时间。

To ensure accuracy, the timer should check the system clock as needed, rather than try to keep track of accumulated time internally.

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