名词
中文翻译：Unknown
同义词：
['retracing', 'reversal', 'retrograde', 'detour', 'rewind']
例句：
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1. The car had to backtrack due to a sudden traffic jam.
由于交通堵塞，汽车不得不倒车。
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2.The scientist made a mistake and had to backtrack his experiments.
科学家犯了一个错误，不得不重新进行实验。
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3.The train was delayed and passengers had to backtrack their journeys.
火车晚点了，乘客不得不重新规划他们的行程。