For solving the said problem, route release or supplementing locking to the route for retreat of the shunting operation can be used.

可采用适合调车后退的进路解锁方式或对调车后退的进路进行补锁方式来解决。

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"He would make a big funny loop off the usual route and we knew it was time to start locking down on him, " she said.

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This route around the top of Canada and Alaska has killed hundreds of sailors and explorers for centuries, locking their ships in ice, starving them, freezing them, driving them insane and causing survivors to eat each other.

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