Out of that weight as much as possible is wanted for fuel, radio navigational instruments, passenger seats, or freight room, and, of course, the passengers or freight themselves.
在体重尽可能通缉燃料，无线电导航仪器，乘客座位，或货物的房间，当然，乘客或货物本身。
Riders may find themselves inching along behind a lumbering freight train for miles at a time, until the route reaches a side track on which the Amtrak train can pass.
旅客有时会发现列车在木材运输列车之后缓慢爬行数英里，直到遇到美国国铁列车可以通行的侧轨。
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