以下为句子列表：
英文: In connection with the characteristics of Yichang mountain area, the key method to reduce the cost and time of transmission lines construction and to make the operation convenient is applying large number of rock foundations.
中文: 摘要根据宜昌山区的特点，如何在输电线路工程中大幅度降低工程造价，方便施工，缩短工期，其重要途径是精心设计，大胆、大量采用岩石基础。
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