You must let the bait fall on total slack line for the proper presentation.

为了让饵最佳呈现诱惑，在饵下沉中你必须让线完全松弛。

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Then we proposed a stochastic expected value model to improve the on-line performance of timetable and reduce total travel time on the basis of considering interactions among various slack times.

首先，给出了冗余时间的含义与分类，探讨了冗余时间对列车运行图动态性能的影响过程，并分析了多种冗余时间之间的关系。

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