Normally the two timers are in step, and the external cues tend to regularise the internal clocks to the more convenient 24 hour period.

一般情况下，这两种定时器是步调一致的。外部信号常常调节人体时钟命使之达到更为便利的24小时周期。

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Normally the two timers are in step, and the external cues tend to regularise the internal clocks to the more convenient 24 hour period.

一般情况下，这两种定时器是步调一致的。外部信号常常调节人体时钟命使之达到更为便利的24小时周期。

youdao