But it assumes that the probability of extreme price changes is negligible, when in reality, stock prices are much jerkier than this.

但是这一模型假设极端价格波动的概率是可忽略的，而在现实当中，股票价格的剧烈波动远比假设的情形要频繁。

youdao

The probability and reality of using RE in agriculture as well as the resultant economic and social effects are expounded both by theory and practice.

还从理论和实践上论述了稀土农用的可行性、现实性，以及由此产生的巨大经济效益和社会效益。

youdao

Pro-life activists must unhappily confront the probability that many of the leading candidates for the GOP nomination in 2012 - while all professedly pro-life - in reality neither care very much nor think very much about the abortion issue.

CNN: What if abortion became a non-issue?