railroad switch

基本解释

How could space weather switch railroad signals from green to red?
空间天气怎么使铁路信号灯由绿变红呢？
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In the virtual world, each participant was stationed at a railroad switch where two sets of tracks veered off.
在这个虚拟的情境中，受试者都被安排在两个轨道的岔道口。
Usually one route is more direct than the other, and if a mining company has sidings and a branch line linked to one railroad it cannot quickly and easily switch to another.
大多数时候，一条铁路比另外一条更直接，如果矿业公司建造旁轨或支线用以链接一条铁路，再想快捷的转移到另外一条上并不容易。

Usually one route is more direct than the other, and if a mining company has sidings and a branch line linked to one railroad it cannot quickly and easily switch to another.
ECONOMIST: American railways