Therefore it is necessary for us to study the option pricing problem when the stock returns have long-range dependence and momentum effect.

因此我们有必要研究股票收益具有长期依赖性及动量效应时的期权定价问题。

youdao

You must have long-range goals to keep you from being frustrated by short-range failures.

你必须有长远的目标，以避免因短暂的失败而丧气。

youdao

That means the long-range rocket, which international satellites have spotted on a North Korean launch pad, could fire its engines as early as Saturday.

VOA: standard.2009.04.01

The Bush-era program would have placed ground-based interceptors in Poland and a radar station in the Czech Republic to counter any long-range nuclear threat posed by Iran.

VOA: standard.2009.09.24

The Bush plan, which Russia strongly opposed, would have placed 10 interceptor missiles in Poland and a radar base in the Czech Republic to intercept long-range missiles from such states as Iran.

VOA: standard.2009.10.23

Furthermore, an enemy need not have long-range missiles.

CENTERFORSECURITYPOLICY: Center For Security Policy

An enemy need not have long-range missiles.

CENTERFORSECURITYPOLICY: Center For Security Policy

We have the beginnings of a long-range energy policy and although we still have to catch up after decades of inaction, we are making real progress.

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