| 词汇 | backtrack |
| 释义 | backtrack verb[ I ] uk /ˈbæk.træk/ us /ˈbæk.træk/ backtrackverb[I] (GO BACK)to go back along a path that you have just followed: 走回头路，原路返回 We went the wrong way and had to backtrack till we got to the right turning.我们走错了路，只好原路返回，直到找到正确的拐弯处。 Returning to a place call call back come come back double back get back huddled re-enter reappear reappearance refoul refoulement return returned returnee revenant turn turn (someone) back U-turn way back backtrackverb[I] (CHANGE OPINION)to say that you did not mean something you said earlier or say that you have changed your opinion: 收回说法;改变意见 [ + speech ]"All right," he backtracked, "It's possible that I was mistaken."“好吧，”他改变了态度说道：“我可能是错了。” The officers were forced to backtrack on their statements.这些军官被迫收回他们的声明。 She refused to backtrack from her criticisms of the proposal.她拒绝收回对该提案的批评。 Denying & contradicting abnegate abnegation breath burst someone's bubbleidiom contradictorily counter-argue debunk deniable deny disabuse disagree dispute make (a) nonsense of somethingidiom myth-buster myth-busting non-acceptance non-recognition recant refute speak for yourselfidiom backtrack | American Dictionarybacktrack verb[ I ] us/ˈbækˌtræk/ to go back the same way you came, or to consider information again: We need to backtrack a bit and examine the history of this problem. If you backtrack from something you previously said or agreed to do, you begin to stop supporting it: The government backtracked on plans that would have increased taxes. Examples of backtrackbacktrack Section 5 introduces conflict sets and our generic search algorithm, and recasts backtracking search in that framework. The presence of the all/2 collector avoids the need for backtracking over multiple remote answers. Chapter 6 improves naive backtracking using look-back schemes for backjumping and learning. Unfortunately, the presence of non-deterministic strategies and rules limits its applicability, because backtracking requires access to structures that would otherwise be reused. The failed attempt to establish this goal in the existing plan network supports expansion, failure, or backtracking as an option. However, the system will add new preconditions rather than backtracking if an unsafe state is generated during synthesis. Still, using the trail for storing both references which have to be reset upon backtracking and inter-block references has important disadvantages. Profiling revealed that in this benchmark, upon backtracking and untrailing it is often needed to remove several cells at once from a certain remembered set. 14 again because backtracking does not remove the reason for the failure !. By contrast, backtracking automata cannot be easily analyzed. The other kind of error - incompleteness via infinite loops or backtracking failure - continues to be bothersome, of course: dependent types do not save us there. Upon backtracking the registers that held these system variables are restored from the choicepoint. If a sub-string matches the contextual restrictions, the corresponding operation applies without later backtracking. Any feature structures and definite clause programs can be used to express the constraint, which may include backtracking, cut, negation-as-failure, assertion and any other operations. In this case backtracking must take place to the most recent choice point either in clause selection or in unification. See all examples of backtrack These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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