词典释义：
readiness for duty or immediate deployment
随时待命
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buses were placed on standby for the journey to London .大客车待命随时出发去伦敦。
[count noun]a person or thing ready to be deployed immediately, especially if needed as back-up in an emergency
应急人员（或物资）
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a generator was kept as a standby in case of power failure 为防供电中断把一台发电机用作应急设备
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[as modifier]
a standby rescue vessel .一艘应急救生船。
an operational mode of an electrical appliance in which the power is switched on but the appliance is not actually functioning
（电子产品的）待机模式。
[as modifier]denoting or relating to an economic or financial measure prepared for implementation in specified circumstances
（经济、金融为应付特定情况的）应急措施
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a standby credit facility .一项应急信贷措施。
the state of waiting to secure an unreserved place for a journey or performance, allocated on the basis of earliest availability
（旅行或看演出时的）等退票状态
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passengers were obliged to go on standby .乘客不得不随时等待出发。
[count noun]a person waiting to secure such a place
等退票者。
