单词：heat economizer
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1. indigence /'ɪndɪdʒəns/ n. 贫穷 By hard work, many people have raised themselves from indigence to wealth. 许多人通过辛勤的劳动，从贫困变得富裕。 2. economize /ɪ'kɒnəmaɪz/ vi. 节省开支；节俭 Housewives can econom
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