This year the city plans to add 30km of cycle lanes, to double the number of public bikes and add another 72 docking stations.

今年，项目打算增加30千米的自行车道，再增加一倍的公共自行车和72个存车点。

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There are many types of structures of double acting pumps and pumping stations which have different technique and economic characteristics.

分析了国内外现有双向功能泵组及泵站的结构型式，进行了技术经济比较。

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Also, this paper introduced the structure and setting of double relay stations in single frequency point and multi frequency point network.

除采取防雷措施外，论文针对该问题提出了双中继组网的方案，并介绍了单频点组网和多频点组网中双中继的构成和设置。

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More than 50% of the polling stations were audited after they closed, double-checking their machine-printed tally reports by comparing them with the printed votes placed in the ballot boxes.

FORBES: The U.S. Should Learn From Venezuela How to Hold Elections

Its first action was to challenge oil companies to double the number of renewable fuel pumps at their stations within the year and pledge to offer E85 ethanol fuel at half of all gas stations within the decade.

CNN: Redford: Kicking the oil habit