It was night when Rola got to the forest.

当罗拉到达森林里时，已是夜晚了。

Especially the youngest one Rola, she was not only beautiful, but also kind hearted.

所有女儿都非常漂亮，特别是最小的女儿，罗拉，她不但漂亮，而且善良。

Results of the paper show clearly that ROLA of the chain network is the unique equivalent under a certain condition, and has given an optimum allication scheme.

结论指明，在一定条件下，该网络的可靠度最优布局是等效唯一网络，并给出了最优布局方案。

The problem discussed in this paper is about Reliability Optimum Link Allocation (ROLA) of the ordinary series chain network in which every chain is composed of two series-links connected in parallel.

本文研究了一般环状串联网络的可靠度最优布局（ROLA）问题，网络中的每个环由两条串联支路并联而成。