rail-way main line的用法和樣例：
例句
- You could operate against the main line of the railway from there.
你從那裡可以襲擊鐵路幹線。 - An electrical breakdown had snarled train traffic on the Northeast rail corridor over the weekend, but everything was running smoothly for the holiday, Cole said.
考爾還說，上個周末東北鐵路幹線電力停工造成了鐵路交通混亂，但每個節假日一切都運行正常。
