如果更多的人都能以这样的思维方式来考虑问题的话，9 + 2的各个地区才真正能够达到步调一致。

If more people were to start thinking along these lines, then 9 + 2 could really start to add up.

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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。

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

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