名词
中文翻译：无路可走的开关
同义词：
['dead switch', 'dead end switch']
例句：
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1. The old house had a pathlessswitch in the kitchen.
那所旧房子厨房里有个无法到达的开关。
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2. Thecar's engine was dead, andthere was no way to turn it backon without a pathless switch.
汽车引擎坏了，没有路径可走，没有开关就无法重新启动。
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3. The old man kept hiskeys in a pathless switch, sohe couldn't be found easily.
那位老人把钥匙放在一个无法到达的开关里，所以不容易被找到。