Secondly, the paper discusses the main functions of the temporary road system, advances the feasibility and necessity of optimum design.

其次论述临时路面系统的主要功能，提出优化设计的可行性和必要性。

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Secondly, on this basis, have proposed the road testing program of the urban passenger train of liquefied petroleum gas, research and analyse the road test of transforming the vehicle.

其次，在此基础上，提出了液化石油气城市客车的道路试验方案，并进行了改造车辆的道路试验研究分析。

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Secondly the method combines with the road characteristic and USES fuzzy connectedness to join the break road segment, and at last farther process to form the whole road network.

接着结合道路局部特征运用模糊连接度连接断裂路段，最后根据道路走向进一步完善整个道路轮廓。

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And secondly, unless you live in Montana or Nevada, finding a road where you can safely scream along at more than 100 mph for any length of time is very difficult.

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