In this article, Brian Goetz explores the motivations for thread pools, some basic implementation and tuning techniques, and some common hazards to avoid.

本文中，Brian Goetz探讨了线程池的动机、一些基本实现和调优技术以及一些要避免的常见危险。

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Earthquake is usually caused by a sudden slip on a fault, resulting in ground shaking and release of seismic energy. Fire, landslide and tsunami are common hazards following an earthquake.

地震通常由断层的突然滑动所致，除了地壳震动外，更因释放能量引发其他灾难，例如火灾、滑坡及海啸。

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Since encoder shafts and bearings must be engineered to have very restricted axial and radial play, using a Dynapar brand CPL Series coupling affords maximum protection against these common hazards.

由于编码器轴和轴承的设计必须有极有限的轴向和径向的发挥，使用针对这些常见的危害一Dynapar品牌CPL的系列耦合获得最大的保护。

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Nor is there any reason why the state should not help to organize a comprehensive system of social insurance in providing for those common hazards of life against which few can make adequate provision.

ECONOMIST: Daily chart

The most common security hazards are "bandit" runners who jump on the course without registering - or racers who take shortcuts, and for the most part, mass violence at sporting events is exceptionally rare across the world.

BBC: Boston Marathon attack: How secure are marathons?

Brenner replied that there are several studies of the exposure following Fukushima that show the local population received low doses that amount to less risk, for the individual, than other hazards common in life.

FORBES: How To Quell Radiation Fears? 'Test Everybody'