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

• In international applications the recommended method of selecting Fonts is to use font fallback wherever possible.
  在国际化应用程序中，选择字体的推荐方法是尽可能使用字体后备。
• A fallback on a user class causes the compiler to assume the current namespace.
  用户类上的后退会让编译器假设使用当前的名称空间。
• All right, we're going to the fallback.
  好吧，我们准备撤退。
• 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。
• This change can break applications that rely on this fallback mechanism.
  此更改可以中断依赖此回退机制的应用程序。
• 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。
• 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。
• 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。
• 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。
• 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。