vicious circle

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I can understand that, but I think it can create a vicious circle of crime, and of course you just pick up bad habits and mates in prison.
我可以理解他们，但是我认为这样造成了一种犯罪的恶性循环，而且一个人总会患上一些不好的习惯，然后进了监狱。
THE Arab world is more or less a vicious circle. None of its problems will be solved soon. All these troubles have the capacity to reinvent themselves.
阿拉伯世界差不多就是一个恶性循环，它的任何问题都无望在短期内得到解决，所有这些麻烦还都有自我再造的能力。
The problem is that it was almost impossible for an ordinary Soviet woman to break this vicious circle. Only celebrities were able to do this.
所以你该明白了吧，普通的苏联女性几乎不可能打破这个（丑衣烂妆的）恶性循环，只有名人们才能做到。

Harris Private Bank's Jack Ablin says deep recessions generate a vicious circle between job losses and reduced economic activity.
A circle, in other words, is not necessarily a vicious circle.
循环并不一定是恶性循环。
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That's not true. A circle isn't at all necessarily vicious.
循环不必然是恶性的。
耶鲁公开课 - 文学理论导论课程节选

So the vicious circle spirals on and the question of why continues to puzzle.
FORBES: Credit Counselors Face Challenges of Their Own -- Just When They're Needed Most

a continuing unpleasant situation, created when one problem causes another problem that then makes the first problem worse

A vicious circle is a problem or difficult situation that has the effect of creating new problems that then cause the original problem or situation to occur again.

恶性循环
The positive feedback characteristic of noise traders would lead to the vicious circle of IPO market efficiency.
噪声交易者的正向反馈作用容易导致IPO市场效率的恶性循环。
医药科学
恶性循环

恶性循环
This causes product quality of software to be difficult to guarantee, there are outstanding software products to come out freshly on the market, the software industry developing Fall into the vicious circle.
这就造成软件产品质量难以保证，市场鲜有出众的软件产品问世，软件业发展陷入恶性循环。
数学
循环论证；循环定义
循环论法