| 单词 | perpetual motion machine |
| 释义 | perpetual motion machine (once / 262652 pages) n WORD FAMILY perpetual motion machine: perpetual motion machines USAGE EXAMPLESThe sketch wonderfully encapsulates the idea of taste as a kind of perpetual motion machine. The Guardian(Jun 22, 2016) “Drag Race” is its own feedback loop, its own perpetual motion machine. New York Times(May 15, 2016) That situation’s about as likely to happen as someone making a successful perpetual motion machine or a legitimately funny Fuller House episode. The Guardian(Mar 23, 2016) n a machine that can continue to do work indefinitely without drawing energy from some external source; impossible under the law of conservation of energy Hyper machine any mechanical or electrical device that transmits or modifies energy to perform or assist in the performance of human tasks |
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