单词	rocket sled
释义	rocket sled noun : a rocket-propelled vehicle that runs usually on a single rail and that is used especially in aeronautical experimentation Example Sentences Recent Examples on the Web Battista is not just a straight-line rocket sled as is the case in many electric cars. Mark Ewing, Forbes, 14 Aug. 2022 Engineers could use test platforms like the Sandia Labs rocket sled to test how these burrowing weapons performed after being dropped from a bomber. Kyle Mizokami, Popular Mechanics, 6 Apr. 2021 His skepticism vanished following tests with scale models fired down a rocket sled track belonging to the UK Defense establishment (located at Pendine Sands, the site of many 1920s land speed records). Jonathan M. Gitlin, Ars Technica, 24 Nov. 2018 Word History First Known Use 1954, in the meaning defined above
随便看	the proof is in the pudding the proof of the pudding is in the eating the Prophet the Prophets the pros the prosecution the provinces the public the public domain the public purse the Queen Mother the quick the quick and the dead the quintessence the rabble the races the rack the rag trade the rage the rank and file the rap the rat race the rather the ratings the ravages of

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