This paper applies a binominal lattices approach to the valuation of venture investment decision, a compounded option of a European option and an American option.

利用二叉树方法，通过对一个欧式期权与一个美式期权构成的复合期权进行定价，完成对风险投资问题的估价。

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Austerity is not an option at the moment (though private American saving is increasing!), and it's hard to see the good in offering a meagre stimulus package.

俭省不是这一刻的选项（尽管美国人个人储蓄正在增加！） 提出一套紧巴巴的刺激方案难以看出有什么好。

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Mr Obama took an American approach to health care, dismissing both a Canadian single-payer option and a broad federal safety-net plan to win support.

奥巴马选择了一个美国式的健保方案来赢得支持，放弃了加拿大式的单一支付方案和广泛的联邦安全网方案。

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If you purchase an option, you have the right to exercise it (with an American style option as most equities are) at any time in the expiration cycle.

FORBES: Pinning The $500 Tail On The Apple

The monetary authority, says Mr Miller, should sell convertible bonds which, if denominated in Hong Kong dollars, carry an option for the holder to convert into American dollars at the set rate.

ECONOMIST: The Hong Kong dollar: Off the peg? | The

But Gen Allen said that the idea of no American military presence in the country was not an option, and that he had not even been asked to look at its feasibility.

BBC: Afghan Isaf commander John Allen sees 'road to winning'