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汉语拼音：shēng wù zhōng

生物生命活动的周期性节律。这种节律，经过长时期的适应，与自然界的节律（如昼夜变化、四季变化）相一致。植物在每年的一定季节开花、结果，候鸟在每年的一定时间迁徙，就是生物钟的表现。

1. 生物生命活动的周期性节律。这种节律，经过长时期的适应，与自然界的节律如昼夜变化、四季变化等相一致。如：植物在每年的一定季节开花、结果，候鸟在每年的一定时间迁徙，都是生物钟的表现。

• If the child is not at rest during the day will inevitably go to bed, as the clock sleep disorder as adults.

  如果孩子晚上休息不好，白天就不可避免地会睡觉，像成人一样把生物钟睡乱。

• Trying to catch up on sleep on the weekends can just push one's biological clock further out of whack.

  试图在周末补觉有可能只会进一步打乱自己的生物钟。

• 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.

  很早之前，科学家就知道了昼夜光线强弱的变化对生物钟调节起到了重要的作用，

• If you are in a relationship that seems to be stagnating, your inner clock will likely begin to sound an alarm this month.

  如果你正在谈恋爱，似乎停滞不前，你可能会开始生物钟本月发出警报。

• But on very overcast days those clock-shifted pigeons are just as good as normal pigeons in starting out in the right directions.

  可在乌云蔽日这时那些生物钟已经改变了的信鸽在沿正确的方向起飞前行方面仍像正常的鸽子那样，做得非常好。

• The salient issue, says study co-author Fred Turek, may be the disruption of the body's internal clock, known as the circadian rhythm.

  该项研究的共同合作者弗雷德·托莱克说，身体生物钟受到扰乱可能是一个突出的问题。

• I only arrived in London yesterday and my body clock is still on New York time.

  我昨天刚到伦敦，而我的生物钟仍然是纽约时间。

• biological time clock within them which causes them to run down in that capacity as they older.

  不是因为他们随着年龄的增长体内的某个生物钟使其哭的能力消耗殆尽。

• Getting very little sleep during the week and trying to "catch up" on the weekends is not a good idea because it alters your sleep schedule.

  每周只有少量的休息，并且试图在周末“补回来”，那么这并不是个好主意，因为这改变了你的生物钟。