something that is always ready for use, especially if a regular one fails(尤指为应对出现问题或故障时的)备用设备,备用品,替代物
When a person or a thing is on standby, they are ready to be used if necessary.待命;备用;随时准备
also standby ticket a cheap ticket sold just before a flight or a performance if there is a seat available(航班起飞前或演出开始前廉价出售的)余票
👨🏻🏫 Mr. Ng 劍橋詞典 📚 – cambridge.mister5️⃣.net
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