By isolating organisms completely from external periodic cues, biologists learned that organisms have internal clocks.
通过将生物体与外部的周期信号完全隔离，生物学家了解到生物体有内部的生物钟。
Their internal clocks start counting from then, so they can calculate the date and time in the future.
他们的内部时钟从那时开始运转，使得他们能够在之后计算日期和时间。
Kids who are struggling to get out of bed in the morning may need help resetting their internal clocks, he says.
他说，那些每天早上都赖床不起的孩子需要有人帮助他们重新设置他们的生物钟。
Scientists have known for a long time that the light of day and the dark of night play important roles in setting our internal clocks.
科学家们很久以前就发现，昼夜光线的变化对于设置生物钟起着重要的作用。
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.
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.
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。
应用推荐