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	ret·ro·rock·et (rĕtrō-rŏk′ĭt) n. A rocket engine used to retard, arrest, or reverse the motion of a vehicle, such as an aircraft, missile, or spacecraft.
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