that makes economical use of energy, esp. electricity or fuel; that facilitates or is conducive to an economical use of energy.
| 单词 | θ217305 |
| 释义 | society > occupation and work > materials > fuel > [adjective] > using efficiently (2) energy-efficient1970 that makes economical use of energy, esp. electricity or fuel; that facilitates or is conducive to an economical use of energy. fuel-efficient1975 |
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