| 单词 | third rail |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔shoe〕The sliding contact plate on an electric train or streetcar that conducts electricity from the third rail.集电靴：电动火车或电车上用来把电从第三轨接过来的滑动触盘美国传统〔third rail〕Social Security is the third rail of American politics.社会保障是美国政治中的烫手山芋。韦氏高阶〔trolley〕A device that collects electric current from an underground conductor, an overhead wire, or a third rail and transmits it to the motor of an electric vehicle.触轮：电力车辆的一种装置，能将地下导体、架空电线或第三个铁道上的电流接收过来并递给电力车辆的发动机的装置美国传统 |
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