Some backtracking is probably inevitable.有時改變決定可能是不可避免的。Leonard jumped in his car and started backtracking.倫納德跳進車里，開始原路折返。The backtracking mechanism is an important facility for programming in logic.回溯機制是邏輯程序設計的重要設施....

v.走原路( backtrack的現在分詞 )，由原路返回，改變主意，取消諾言...

Leonard jumped in his car and started backtracking.倫納德跳進車里，開始原路折返。Some backtracking is probably inevitable.有時改變決定可能是不可避免的。The backtracking mechanism is an important facility for programming in logic.回溯機制是邏輯程序設計的重要設施.Leon...