永动机yǒngdòngjīTop 40000Meanings1. perpetual motion machineCharacters used永forever动to move机machineExamples1永动机yǒngdòngjī这个zhège概念gàiniàn是shì个gè荒唐huāngtáng的de假说jiǎshuō。The idea of perpetual motion is an absurd hypothesis.