Coffee later in the day also disrupts our sleep cycles, which continues the vicious cycle of waking up feeling unrested and needing that cup of joe to wake yourself up.

在晚上，咖啡也会扰乱我们的睡眠周期，持续着睡不着无法休息好，然后又只能用咖啡提神的恶性循环。

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The chimp had a sweet and tactile side but could also be violent, messy and vicious. But as Marsh points out, that's what chimpanzees are like, that's how they behave.

这只猩猩有可爱和通人性的一面，但他也有粗暴、肮脏和邪恶的一面，但就像马什所指出的那样，黑猩猩本来就是那样的，都是本性的行为。

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Their findings indicated that earlier, pre-historic settlers also had to contend with vicious swings in climate on icy Greenland.

他们的发现表明，在早至史前时期，定居在此的人类不得不面对在冰天雪地的格林兰岛上变化无常的恶劣气候的挑战。

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Ideas to spur the bond market also quickly return to the vicious circle of declining investment.

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In a moment, the view from Lake Elsinore, California, hard hit by this vicious cycle but also right now a place of great opportunity.

CNN: Transcript of May 'CNN Money Summit: Money & Main St.'

It also unleashed a torrent of vicious anti-McCain advertising that fully lived up to the exacting standards of a state that has turned character assassination from an art into a science.

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