He was now able to tell time by the position of the sun during a day.
他现在可以根据一天中太阳的位置来判断时间了。
Even before they learned the answers to these questions, they developed a way to use the changing faces of the moon to tell time.
甚至在得到这些问题的答案之前，他们就发明了一种运用不断变换的月相来告知时间的方法。
An equatorial sundial is an ancient scientific equipment to tell time by using the shadow from solar projection. It consists of a sundial plate, a gnomon and a base.
赤道式日晷，是古人利用太阳投影测时的科学仪器，由晷盘、晷针和底座组成。
With this watch you can tell time in the dark because its hands and dial are luminous.
用这只表你可以在黑暗中看时间，因为它的针和针盘都是会发亮的。
And their results show that the brain does not use a single stopwatch. Instead, it has several ways to tell time, and none of them seems to work like a conventional clock.
结果他们发现，大脑并不是只依赖一部生理时钟来工作，相反，它借助很多办法进行报时，其中却没有任何一种类似于人类使用的传统时钟。
And their results show that the brain does not use a single stopwatch. Instead, it has several ways to tell time, and none of them seems to work like a conventional clock.
结果他们发现，大脑并不是只依赖一部生理时钟来工作，相反，它借助很多办法进行报时，其中却没有任何一种类似于人类使用的传统时钟。
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