英语词汇“perpetual motion”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-新都网

单词	perpetual motion
释义	perpetual motionperˌpetual ˈmotion noun [uncountable] 1the idea that a machine would be able to continue moving forever without getting energy from anywhere else, which is not considered possible2be in perpetual motion informal to be very active for a long time without stopping: She seemed to be in perpetual motion, never stopping to relax.
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