| Mean | The capacity for work or vigorous activity; vigor; power. |
| [고1] 한국교육 | 1. When we deal with waste, let's do our part to save not only our money and our energy but also our country and our world, as both customers and consumers. [11과]
2. This conserves both energy and materials. [11과]
3. It saves a lot of energy, materials, and money. [11과]
4. When you recycle glass, paper, or metal, you conserve materials, energy, and money. [11과]
5. This means conserving materials and energy by using things again instead of throwing them away. [11과]
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