While there are numerous types of sharks, only four are most frequently cited in encounters with humans—the bull shark, the tiger shark, the great white shark and the oceanic white tip shark.

鲨鱼的种类有很多，而经常被载攻击人的只有四种 – 牛鲨（学名白真鲨）、虎鲨（学名居氏鼬鲨）、大白鲨（学名噬人鲨）、白鳍鲨（学名灰三齿鲨）

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There was a wobble in May-June last year (emerging markets took the biggest hit), but this bull market has trotted on pretty serenely for four years.

最近四年，虽然在去年五六月间有些小振荡(主要影响了新兴市场)，但总体表现相当不错。

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The Internet bull market continued to run for four more years after the Open market IPO, finally ending in the spring of 2000.

在Open Market IPO后，互联网牛市又延续了4年，终结于2000年春季。

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Is the four-year bull market that has seen stocks more than double since the panic lows another illusion?

FORBES: Icahn, Herbalife and Greed, Sponsored by the Fed

Then in early March, 2009, when the 2008-2009 financial meltdown seemed at its worst, near panic that the economy was headed still lower into the next Great Depression, the widespread opinion being that the massive bailouts by the government could not possibly work, the stock market launched into what has become an impressive four-year bull market.

FORBES: Usually Right, The Market Says No Problem For Economy In Sight

Our ratings for domestic stock funds look at long-term performance over four bull and bear market cycles stretching back 12 years.

FORBES