fallback

英 [ˈfɔːlbæk]

美 [ˈfɔːlbæk]

n.  应变计划; 退路

复数：fallbacks　

计算机

BNC.48596 / COCA.23870

牛津词典

noun

• 应变计划；退路
  a plan or course of action that is ready to be used in an emergency if other things fail
  1. 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？
  2. We need a fallback position if they won't do the job.
     如果他们不干这个工作，我们就需要一个应变的方案。

柯林斯词典

• ADJ (计划失败或发生意外时)退守的，应变的，备选的
  Someone'sfallbackposition is what they will do if their plans do not succeed, or if something unexpected happens.
  1. 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。

英英释义

noun

• to break off a military action with an enemy
  Synonym:disengagementpullout

双语例句

• The downside of this method is that two reboots are needed in case of a fallback.
  这个方法的缺点是回滚时需要两个启动方式。
• The next character in the replacement fallback buffer.
  替换回退缓冲区中的下一个字符。
• When an application attempts to encode or decode a character but no mapping exists, it must implement a fallback strategy, which is a failure-handling mechanism.
  如果应用程序尝试对字符进行编码或解码，但不存在相应的映射，则应用程序必须实施回退策略（这是一种失败处理机制）。
• Also, though not reflected in this table, there are global settings for fallback mechanisms if some of the contributing components do not provide any caching-related information.
  另外，如果某些提供信息的组件没有提供任何与缓存相关的信息，则可以使用后备机制的全局设置，不过这一点没有在此表中得到体现。
• For functions and constants, if the current namespace does not contain that function or constant, PHP's fallback mechanism will fall back to the standard PHP function.
  对于函数和常量，如果当前的名称空间不包含这个函数或常量，PHP的后退机制会后退到标准的PHP函数。
• Configuration of IBM NAS client for server discovery using TDS with the fallback mechanism
  使用带后备机制的TDS进行服务器发现的IBMNAS客户端配置
• This is our fallback position, here.
  这里是我们的后备阵地。
• This article goes through the multiple ways of doing a TL update and the fallback options, as well.
  本文将详细说明TL的多种更新和回滚方法。
• If all fails, there is a fallback.
  如果这一切努力都失败了，我还有后备方案。
• The manifest file consists of three sections: CACHE, NETWORK, and FALLBACK.
  清单文件包括三个部分：CACHE、NETWORK和FALLBACK。