An NBC News-Wall Street Journal poll has Obama and Clinton tied at 45 percent in a national survey, but also showed a spike in negative views of Senator Clinton.

全国广播公司新闻节目和华尔街日报联合进行的全国调查显示，奥巴马和克林顿的支持率都是45%，但是也显示对克林顿持负面看法的人数大幅上升。

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At each growth stage, tiller height had a significant positive correlation with spike biomass, but a negative correlation with reproductive allocation.

各生育期的星星草种群生殖分蘖株高与花序生物量呈显著正相关，而与生殖分配呈显著负相关。

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Depending on the polarity of an ESD event you apply to the circuit's input connector, its high-voltage spike discharges through diode D1A or D1B into the positive or the negative power-supply rail.

依靠ESD适用电路输入连接器的极性，其高电压放电通过二极管d 1a或d1b进入供电正向或负向电源。

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So, if the percent is high, that could be a negative for a given stock, since a dip in revenues, or a spike in expenses (or any other myriad of combinations that lower net income) could make the dividend unsustainable.

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But it is also true that eurozone crises or earthquakes that cause tsunamis in Japan or the spike in oil prices, or other events that affect the global economy have a negative impact on the American economy.

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