You know this is the third rail, right?

你知道这是第三根铁轨对吧？

In some cities, a third rail provides power to a subway train, usually operating underground; electricity passes through the rail.

在一些城市，第三道铁轨(电动机车的输电轨)给通常在地下运行的地铁列车供电，电力通过这道铁轨传输。

That is a slightly lower proportion than in Greece or Sweden, but far higher than in America, where raising fuel taxes is nonetheless said to be a "third rail", deadly to politicians.

比希腊和瑞典低一些，但是远远的高于美国。在美国，提高燃油税就像是第三铁道，对于政客来说是致命的。

It was private land, dissected by the driveways, the buck-and-rail fences, the arched gateways of people wealthy enough to have a second home, or a third, on the headwaters of the Green.

这是位于绿河源头的私人土地。那些有能力拥有第二或第三个家的有钱人用车道、架子横杆围栏，和拱形通道将这里划分成几部分。

The trains are also packed with locals following the decision in the middle of 2008 by Thailand's rail network to offer free third-class travel for Thai nationals on certain routes.

根据泰国铁路网在2008年中旬的决定，列车同时也为当地人提供某些路线的三等车厢搭载服务。

According to Environment America, high-speed rail USES a third less energy per mile than auto or air travel, and a nationwide system could reduce oil use by 125 million bbl. a year.

根据美国环境署资料，高铁和汽车或者飞机相比每公里使用能源最少，而一个全国范围的系统将能每年减少使用1.25亿桶的石油。

Third, rail - to - rail amplifier output stages exhibit load - dependent gain which affects amplifier open - loop gain, and hence closed - loop gain accuracy.

第三，轨到轨放大器输出级增益与负载有关，这将影响放大器的开环增益，当然也影响了闭环增益的准确性。

While an additional 60 billion, one third will be used for rail transit construction.

而追加的60亿元中，三分之一将用于轨道交通建设。

The third chapter introduces the embedded guide rail loading design, an improvement made on the basis of double guide rail loading proposal.

第三章在双层导轨加载方案的基础上进行了改进，设计了嵌入式导轨加载方案。

The coopration of railway freight and third-party logistics, on the one hand, can attain the goal of intensive and fast service, on the other hand, can enhance the level of rail freight services.

铁路货运与第三方物流相结合，既能实现集约化、快捷化的目标，又能提升铁路货运服务水平。

The body of the third part focuses on the revival of rail transit performance.

正文第三部分重点论述了轨道交通复兴的表现。

Third, rail-to-rail AMPLIFIER OUTPUT stages exhibit load-dependent gain which affects AMPLIFIER open-loop gain, and hence closed-loop gain accuracy.

第三，轨到轨放大器的输出状态表现出影响开环增益从而影响闭环增益精度的负载增益效应。