释义 
		 stand·by BrE   /ˈstændbaɪ / NAmE   /ˈstændbaɪ /   noun   (stand·bys  )  a  person  or  thing  that  can  always  be  used  if  needed , for  example  if  sb /sth  else  is  not  available  or  if  there  is  an  emergency    后备人员;备用物品◆ I  always  keep  a  pizza  in  the  freezer  as  a  standby .   我总会在冰箱里放一个比萨饼以备不时之需。◆ a  standby  electricity  generator   备用发电机● on  ˈstandby ready  to  do  sth  immediately  if  needed  or  asked    随时可以投入行动;处于待命状态;招之即来◆ The  emergency  services  were   put  on  standby     after  a  bomb  warning .   接到炸弹警报后,各应急服务机构进入待命状态。ready  to  travel  or  go  somewhere  if  a  ticket  or  sth  that  is  needed  suddenly  becomes  available    候补座位(如临时有票或具备其他必要条件便可立即出发的)◆ He  was   put  on  standby     for  the  flight  to  New  York .   这班飞往纽约的班机,他候补待位。 stand·by BrE   /ˈstændbaɪ / NAmE   /ˈstændbaɪ /   adjective   [ only before noun ]   a   standby     ticket  for  a  flight , concert , etc . cannot  be  bought  in  advance  and  is  only  available  a  very  short  time  before  the  plane  leaves  or  the  performance  starts    (机票、音乐会门票等)最后时刻出售的