Hypernyms:machine
Inherited Hypernyms:perpetual motion machinemachinedeviceinstrumentalityartifactwholeobjectphysical entityentity
| 单词 | perpetual motion machine |
| 释义 | Perpetual Motion Machine nnoun.artifacta machine that can continue to do work indefinitely without drawing energy from some external source; impossible under the law of conservation of energy Hypernyms:machine Inherited Hypernyms:perpetual motion machinemachinedeviceinstrumentalityartifactwholeobjectphysical entityentity |
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