standby
柯林斯词典
1. N-COUNT A standby is something or someone that is always ready to be used if they are needed. 备用物; 后备人员
Canned varieties of beans and peas are a good standby. 各种豆类罐装食品是很好的备用食品。
2. PHRASE If someone or something is on standby, they are ready to be used if they are needed. 处于待命状态
Five ambulances are on standby at the port. 五辆救护车在那个港口待命。
3. ADJ A standby ticket for something such as the theatre or a plane trip is a cheap ticket that you buy just before the performance starts or the plane takes off, if there are still some seats left. (飞机起飞前、剧院演出开始前出售的) 剩余廉价的 (票)[ADJ n]
He bought a standby ticket to New York at 5:30 a.m. the following morning and flew to JFK airport six hours later. 他买了张第2天凌晨5:30飞往纽约的剩余廉价机票，6个小时后飞往肯尼迪机场。
4. ADV Standby is also an adverb. 凭剩余廉价票地[ADV after v]
Magda was going to fly standby. 玛格达将凭剩余廉价机票乘飞机旅行。
返回 standby
standby /ˈstændbaɪ/ (also stand-by) (standbys)
剑桥词典
standby noun [C] (READY)
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
Board games are a good standby to keep the children amused if the weather is bad . 天气不好时，棋类游戏是个不错的哄孩子们开心的备用选择。
There are standby generators but these usually only have to work for a few hours a year during power cuts . 有备用发电机，不过通常一年只在断电时使用几个小时。
on standby
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
Hospitals are on standby ready to deal with casualties from the crash . 医院随时准备着接纳撞车事故的伤者。
standby noun [C] (TICKET)
(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 返回 standby