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 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。
• 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。
• 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。
• Have a plain HTML fallback for browsers you don't support.
  拥有一个平面HTML代用系统，以应对您不支持的那些浏览器。
• 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。
• 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）。
• 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。
• You have successfully configured the IBM NAS client to look up the NAS servers using TDS, along with a fallback mechanism.
  您已经成功地配置了IBMNAS客户端，使其使用带后备机制的TDS来查找NAS服务器。
• All right, we're going to the fallback.
  好吧，我们准备撤退。
• 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。