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 second instance is the default or fallback value if the variable isn't defined in the properties file.
  如果属性文件中没有定义变量，那么第二个实例是默认值或回退值。
• I've assumed that if you have access to a wireless LAN, you also have access to a wired network as a fallback.
  我假定你可以访问无线局域网，作为应急办法你也能访问有线网络。
• For those less magically gifted, China's Hebei province now has a fallback option.
  对于那些魔法天赋不高的孩子，中国的河北省目前提供了一个备选学校。
• 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。
• 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。
• 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。
• 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。
• The fallback of a huge explosion. the act of exploding or bursting something.
  一次大爆炸的降落物使某物爆裂或爆炸的动作。
• The problem here is that there is no standard HTML fallback to navigate to one of the available pages.
  这里的问题是，没有一个标准HTML回退操作来导航到一个可用页面。
• However, Beijing has a fallback plan.
  不过，北京方面有一个后备计划。