rail-way main line的用法和樣例：
例句
- You could operate against the main line of the railway from there.
你從那里可以襲擊鐵路干線(xiàn)。 - 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(shuō)，上個(gè)周末東北鐵路干線(xiàn)電力停工造成了鐵路交通混亂，但每個(gè)節假日一切都運行正常。
