名词
中文翻译：储备线
同义词：
['备用线路，预备线路例句：1. The engineers had to reserve a bus-bar for the emergency repair.（工程师们不得不为紧急修理预留一条总线。）2. The company has reserved bus-bars for its new office building.（该公司为其新办公楼预留了总线。）']
例句：
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1. The engineers had to reserve a bus-bar for the emergency repair.
工程师们不得不为紧急修理预留一条总线。
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2. The company has reserved bus-bars for its new office building.
该公司为其新办公楼预留了总线。
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3. During the power outage, we had to rely on our reserve bus-bars to get through the night.
在停电期间，我们不得不依靠我们的备用总线度过那个夜晚。