stand - by

英 美
  • 备用
  • by prep.靠近;通过;被;经由;不迟于adv.经过;在旁边;靠近
  • stand v.站立;忍受;位于;停滞n.站立;货摊;停顿;看台
名词 standby:
  1. something that can be relied on when needed

  2. an actor able to replace a regular performer when required

形容词 standby:
  1. ready for emergency use