The light signals sent to your body's master clock tell you when to be sleepy and when to be alert.
传送到我们身体的主时钟的信号告诉我们什么时候该睡觉，什么时候又该打起精神。
If you wake early and get outside, the body's master clock tends to shift earlier, says Mariana Figueiro, a scientist at Rensselaer Polytechnic Institute in Troy, n.y..
纽约州特洛伊·伦斯勒理工学院的科学家玛丽安娜·菲戈罗如是说，如果你早起到户外去，那么你身体的主时钟就会被拨快。
Sleep affects the master clock in our brain.
睡眠会影响我们大脑中的主生物钟。
This article lays its stress on the main testing methods of the precision of master clock and the relevant synchronous equipment.
论文着重介绍了主时钟以及相关同步设备精度的主要测试方法。
With the signal from the master clock, the slave clock is able to recover an accurate local clock signal using a Clock Recovery Phase Locked Loop (PLL).
从时钟利用主时钟发来的时钟信号，通过数字锁相环恢复出本地时钟信号。
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