The other force behind the explosion in derivatives trading was the combination of mathematics and computing.

推动衍生品交易激增的另一股力量是数学与计算机的结合。

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Since trading relies on the ability of a trader to take a risk and manage it accordingly, traders usually adopt some combination of the three above methods to make their buy or sell decisions.

由于交易依靠交易员冒风险并相应地管理风险的能力，交易员通常采取某个三种以上方法的组合来作出买入还是卖出的决定。

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The legislation is designed to significantly reduce the nation's greenhouse gases, accomplished through a combination of trading markets and the deployment of advanced technologies.

该法案的目的是通过结合市场交易和部署先进技术显著降低美国的温室气体排放。

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The combination of those key factors made trading Revis all but inevitable, especially in light of his willingness to play hardball in previous negotiations with the Jets and their unwillingness to keep him at too high a cost.

WSJ: Jets Swap Revis for Picks

The combination has the U.S. futures trading slightly below fair value at the moment.

FORBES: Five Resistance Points Keeping the Markets In Check

Comcast shares are trading sharply higher Wednesday on a combination of strong Q4 results, a big dividend hike and an aggressive new stock repurchase plan.

FORBES: Comcast Shares Rally On Q4 Beat; Div Hike; Big Buyback