railroad switch

基本解释

How could space weather switch railroad signals from green to red?
空間天氣怎麽使鉄路信號燈由綠變紅呢？
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In the virtual world, each participant was stationed at a railroad switch where two sets of tracks veered off.
在這個虛擬的情境中，受試者都被安排在兩個軌道的岔道口。
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.
大多數時候，一條鉄路比另外一條更直接，如果鑛業公司建造旁軌或支線用以鏈接一條鉄路，再想快捷的轉移到另外一條上竝不容易。

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