backtrack

英 [ˈbæktræk]

美 [ˈbæktræk]

v.  原路返回; 折回; 折返; (屈于压力而)改变声明(或主张)，出尔反尔; 退缩

现在分词：backtracking　过去式：backtracked　过去分词：backtracked　第三人称单数：backtracks　复数：backtracks　

化学

BNC.21946 / COCA.17377

牛津词典

verb

• 原路返回；折回；折返
  to go back along the same route that you have just come along
• （屈于压力而）改变声明（或主张），出尔反尔；退缩
  to change an earlier statement, opinion or promise because of pressure from sb/sth

柯林斯词典

• VERB 改变（说法、决定等）；出尔反尔
  If youbacktrack ona statement or decision you have made, you do or say something that shows that you no longer agree with it or support it.
  1. The committee backtracked by scrapping the controversial bonus system...
     委员会改变主意，放弃了有争议的奖金制度。
  2. The finance minister backtracked on his decision.
     财政部长收回了他的决定。
• VERB 原路返回
  If youbacktrack, you go back along a path or route you have just used.
  1. Leonard jumped in his car and started backtracking...
     伦纳德跳进车里，开始原路折返。
  2. We had to backtrack to the corner and cross the street.
     我们不得不原路返回到拐角处过街。
• VERB 倒回（描述或解释内容）
  If youbacktrackin an account or explanation, you talk about things which happened before the ones you were previously talking about.
  1. Can we just backtrack a little bit and look at your primary and secondary education?
     我们能不能回过头来谈谈你的小学和中学教育？

英英释义

verb

• retrace one's course
  1. The hikers got into a storm and had to turn back
  Synonym:turn backdouble back

双语例句

• It's especially tough to backtrack through research using new sites with rich Web2.0 features that display extra data directly within a Web page.
  如果你使用的浏览器有Web2.0的功能，直接在网页中显示额外信息的话，那么回过头来寻找浏览过的网页变得尤其困难。
• Air cargo loading problem by backtrack algorithm is solved.
  用回溯算法解决飞机货舱装载问题。
• We got lost driving to Shunyi, so had to backtrack quite a lot until we finally found the correct road.
  我们在开往顺义的路上迷路了，所以我们不得不回头重走了好长一段，才找到正确的方向。
• Do not ask whether we should backtrack, ask how we can blaze a new trail.
  不要问我们是否会走回头路，问问我们如何开辟新的道路。
• Can we just backtrack a little bit and look at your primary and secondary education?
  我们能不能回过头来谈谈你的小学和中学教育？
• If a mistake is later detected, then we must backtrack to the point of error and try another alternative. This is called backup.
  如果以后发现它是错误的，我们必须退回到点，再试另外的选择。这种方法称为回溯。
• Leonard jumped in his car and started backtracking
  伦纳德跳进车里，开始原路折返。
• On the analysis of Kongming chess, proposes recursion and non-recursion algorithms based on backtrack for the issue, which works effectively.
  对孔明棋求解问题进行分析，提出了基于回溯思想的递归和非递归算法，运行结果表明了算法的有效性。
• Most people would rather waffle than tell you something and have to backtrack later.
  大多数人宁愿闲扯也不愿告诉你一些事情，最后不得不苦苦回想当初的蛛丝马迹。
• We had to backtrack to the corner and cross the street.
  我们不得不原路返回到拐角处过街。