单词：waste material
waste material的用法和样例：
例句
- The chemical waste endangers people's health.化工废料危害人们的健康。
- The factories would put their waste into the Lakes.工厂总是把废料排入湖内。
单词：waste material 相关文章
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天天商务口语
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实用英语
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英语时差8，16