| 词汇 | black rover |
| 释义 | black rover noun a Metropolitan Police warrant card. This card authorises free travel throughout the London Transport system and thus plays on a London Transport Red Rover ticket which allowed the purchaser unlimited travel UK, 2002 |
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青年旅行网英语在线翻译词典收录了440382条英语词汇在线翻译词条，基本涵盖了全部常用英语词汇的中英文双语翻译及用法，是英语学习的有利工具。