standby [ˈstændˌbaɪ]

例句:

• Canned varieties of beans and pulses are a good standby.
  各种豆类罐头制品是很好的常备食品。
  来自柯林斯例句
• The regional bloc has put a military force on standby.
  来自VOA
• He sat through the trial as a standby juror.
  他作为候补陪审员参加了审判的全过程。
  
• Access International books standby flights from New York to Europe.
  全球通达公司可以预订从纽约到欧洲的剩余机票。
  
• Liquid nitrogen became a new standby for the gastronomic avant-garde.
  来自NEWYORKER
• Nevertheless, Chris Evans is on standby.
  来自THETIMES