| 释义 |
Collins Concise English Dictionary © HarperCollins Publishers:: roller derby n - a race on roller skates, esp one involving aggressive tactics
Roll′er Der′by, [Trademark.]- Trademarksa contest between two teams on roller skates, held on a circular, usually banked board track, in which the teams race around the track in each unit of play, working to free a teammate or teammates for the opportunity to score by lapping one or more opponents.
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