The safety identification marks for fuel gas pipeline facilities, such as mark stake, test stake, mile stake, warning board, etc. ;

标志桩、测试桩、里程桩、警示牌等燃气管道设施安全识别标志；

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To construct the buildings or structures, or engage in piling, digging or pushing forward underground in the safety control scope of the fuel gas pipeline facilities.

在燃气管道设施的安全控制范围内，建造建筑物或者构筑物，从事打桩、挖掘、顶进作业。

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Armenia has made efforts to obtain other sources of fuel, such as a natural gas pipeline from its southern neighbor Iran, which opened in 2007.

亚美尼亚做出了各种努力来获得其他来源的燃料，比如在2007年开通了一条从南边的邻国伊朗进口天然气的管道。

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"She's an energy chick, " Bode says of Palin, noting that the governor has "kick-started" efforts to build a natural gas pipeline to deliver the fuel to the lower 48 states.

FORBES: Magazine Article

Although upgrading biogas to pipeline quality results in a fuel considerably more expensive than natural gas, biomethaneis starting to gain momentum in the U.S., particularly as a potential renewable fuel that can satisfy advanced biofuels mandates under the Renewable Fuel Standard (RFS2) and emerging Low Carbon Fuel Standards (LCFS).

FORBES: Biogas and the Shale Gas Bonanza

"Increasing the nation's use of natural gas for electricity generation could result in adverse economic consequences, " the report said, noting that natural gas prices are fickle and that fuel switching on a large scale would require regulators to approve more pipeline and storage capacity.

FORBES: The Greening Of The Hill