The World's Health Organization calls it a vicious cycle.

世界卫生组织称其为恶性循环。

Physical exercises can stimulate the flow of blood.

运动能促进血液循环。

STEP 2 Stretch to stimulate the nervous system and fight stress hormones. The resultant tightening of muscles will increase blood circulation compromised by high tension and inactivity. Merely moving has been shown to alter the brain's stress hormones.

做伸展运动，刺激神系统，抵抗压力荷尔蒙。由此引发肌肉紧张可以曾加受到紧张情绪和缺乏运动损害血液循环。仅仅运动就可以改变大脑压力荷尔蒙。

In times of economic woe, when normal patterns of consumption and investment are frozen, prodigal government spending can sometimes be the only way to break the vicious circle of declining demand and shrinking employment.

在济困难时期，常规消费和投资模式会陷入僵局，慷慨政府开支有时候可能是打破需求下滑、失业率上升个恶性循环唯一途径。

Their expenditure created a virtuous economic cycle.

他们开支创造了济良性循环。

It's a vicious cycle, with seemingly no reprieve.

是一个恶性循环，似乎没有喘息机会。

Once established, such a culture will kick start a cycle of positivity.

一旦社会和化得以建成，化就会开启一良性循环。

It's on an endless loop in the den.

屋里可都是循环播放着。

The elaborate economic rules and regulations was overseen by a bloated expensive bureaucracy locking the government into a vicious circle and marking the first step of western society into feudalism.

详尽济规则并未得到监督，因为官僚机构肿胀，政府陷入恶性循环，标志着西方社会迈入封建社会第一步。

Responsibility, dialogue, action and reporting are the key elements in a virtuous circle through which everyone benefits.

责任、对话、行动和汇报是良性循环中关键组成部分。个良性循环使大家都受益。

No humans even touch them. That can create these vicious cycles, these self-reinforcing cycles.

人不去碰。就可能产生恶性循环，而且些循环会自我愈演愈烈。

Therefore, Loganair uses a network design referred to as a " milk run."

所以，洛根航空采用了一叫“循环运输”方式。

This creates a vaporized rock atmosphere on the planet like the Earth's water cycle.

就在星球上形成了一蒸发岩石大气层，就像地球上循环一样。

If you look out here to the south, you can see a circular ornamental Pond.

如果你从里往南看，你会看到一个循环装饰性池塘。

Thanks to the cyanobacteria, a fascinating self-perpetuating circle came into being.

感谢蓝藻，一个迷人自我永恒循环就此形成。

This vicious cycle is worth literally billions of dollars a year.

一恶性循环每年实际上价值几十亿美元。

So then it gets worse and worse and worse and you're in a vicious cycle.

然后情况变得越来越糟，越来越糟，你就进入了恶性循环。

There may be a circular argument there.

成循环论证了。

Or it could loop around in a periodic way, like in some video games.

或者它可以进行周期性循环，就像一些游戏一样。

And one of the biggest habit loops around anxiety is worry.

而焦虑最大习惯循环之一就是担忧。