英语词汇“retrorocket”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	retrorocket
释义	Word Frequency retrorocket (ˈrɛtrəʊˌrɒkɪt) noun a small auxiliary rocket engine on a larger rocket, missile, or spacecraft, that produces thrust in the opposite direction to the direction of flight in order to decelerate the vehicle or make it move backwards Often shortened to: retro
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