A ring network can be modeled by a Markov chain and its characteristics can be described by several indicators such as the mean first passage times of the Markov chain.

一个环状网络可以由马尔科夫链来描述，并且通过求解该马尔科夫链的平均首达时间等指标来描述该网络的特点。

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The passage of time does not change the laws of nature; if you repeat an experiment many times--for example, making billiard balls collide at a given angle--the result is always the same.

时间的流逝不会改变这些定律；就好比你可以任意重复同一个实验--比如，可以让两个台球总是以固定的角度（和速度）相撞--（该实验的）结果一定会是一样的。

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Researchers are finding that older people are many times happier than their younger counterparts. Life experience, passage of time and emotional stability appear to be driving factors.

研究人员如今发现年纪较大的人比年纪轻的人要快了许多倍。生活体验、时间流逝，及情感稳定看上去是驱使原因。

youdao

The Vienna Philharmonic gave its first note-perfect performance under Mr Kaplan's baton and he experienced his deepest satisfaction when the horn section, struggling in a recording session to accommodate the changes, played one passage 11 times in their earnestness to get it right.

ECONOMIST: Gilbert Kaplan

The immorality of a Clintonian gambit that will have the effect of providing political and economic life-support for Castro is evident in a passage from the Times' article.

CENTERFORSECURITYPOLICY: Center For Security Policy

They looked at 119 genes that have accumulated mutations over the passage of time, allowing the relative times of origin of each species to be estimated.

BBC: Earth AP