fall back on

英 [fɔːl bæk ɒn]

美 [fɔːl bæk ɑːn]

（其他方法行不通时）转而做，转而使用，转而依靠

柯林斯词典

• PHRASAL VERB (其他方法行不通时)转而做，转而使用，转而依靠
  If youfall back onsomething, you do it or use it after other things have failed.
  1. Unable to defeat him by logical discussion, she fell back on her old habit of criticizing his speech...
     由于在条理上说不过他，她便转而重施故技，抓住他的演讲不放。
  2. When necessary, instinct is the most reliable resource you can fall back on.
     必要时，最保险的办法就是凭直觉判断。

双语例句

• If John loses his job, he has nothing to fall back on.
  如果约翰失掉这份工作的话，他就无所依靠了。
• It's always useful to have something to fall back on.
  有点依靠的东西总是有用的。
• She was obliged to fall back on her own resources and habits for everything connected with the future.
  未来的一切都必须依靠自己的智慧和平素的修养来解决。
• He has his rich parents to fall back on.
  他可以依靠他有钱的父母。
• Unable to defeat him by logical discussion, she fell back on her old habit of criticizing his speech
  由于在条理上说不过他，她便转而重施故技，抓住他的演讲不放。
• When necessary, instinct is the most reliable resource you can fall back on.
  必要时，最保险的办法就是凭直觉判断。
• She could fall back on her aunt.
  她可以依靠她的姑妈。
• She's completely homeless-at least I have my parents to fall back on.
  她是真得无家可归-至少我还有父母可依靠。
• If these new methods don't work, we'll have to fall back on our old system.
  如果这些新方法不奏效，我们不得不依靠我们的旧系统了。
• It's good to have a friend to fall back on.
  有个朋友可依靠是好事。