fallback是什么意思？

fallback

英[ˈfɔ:lbæk] 美[ˈfɔlˌbæk]

• n. 可依靠的东西，退却，回降物；

例句

• Do we need it now that we have fallback group here? 你必须登录后才能回复想现在登录吗?
• What's our fallback if they don't come up with the money? 要是他们拿不出钱，我们如何应变？
• Yesterday'svote itself was a retreat from an earlier fallback position. 昨天的投票本身就是放弃先前所留退路的做法。
• Yesterday's vote itself was a retreat from an earlier fallback position. 昨天的投票本身就是放弃先前所留退路的做法。

柯林斯高阶英汉双解学习词典释义

• ADJ
  (计划失败或发生意外时)退守的，应变的，备选的
  Someone's fallback position is what they will do if their plans do not succeed, or if something unexpected happens.
  例句
  Yesterday's vote itself was a retreat from an earlier fallback position. 昨天的投票本身就是放弃先前所留退路的做法。

英英词典释义

• Noun
  1. to break off a military action with an enemy

行业词典

• 计算机： 撤退；低效率运行；