The worst day, Oct. 19, took the S&P 500 down to 224.84 in a terrifying 20% drop.

最糟糕的日子是10月19日，那天，标普500被打到224.84的点位，降幅达到恐怖的20%。

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Results Before sudden drop of temperature, the levels of adrenal axis hormones and thyroid axis hormones were lower in the model group than those in the normal group(P<0.05 or P<0.01).

结果降温前，模型组大鼠肾上腺皮质轴激素水平和甲状腺轴激素的水平均低于相应的生理组大鼠（P<0.05或P<0.01）。

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There was also a 25% drop in the overall number of successful trades between 1:30 p.m.

FORBES: Agita On Wall Street