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1Having only one track of rails.
2Concentrated on, preoccupied with, or capable of only one subject or line of thought; obsessional; especially in "one-track mind".
Early 20th century; earliest use found in American Historical Review.
雅致网英汉双解词典包含236457条英汉翻译词条，涵盖了常用英语单词及词组短语的翻译及用法，是英语学习的必备工具。