| 词组 | black rover |
| 释义 | black rover noun a Metropolitan Police warrant card UK 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.
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英语词组固定搭配大全包含4241条英汉双解词组，基本涵盖了全部常用英文词组、短语的翻译及用法，是英语学习的有利工具。