名词中文翻译
中文翻译：已花费的材料
同义词：
['wasted materials', 'used materials']
例句：
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1.The company spent a lot of money on advertising to attract more customers.
公司花了很多钱在广告上以吸引更多顾客。
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2.The old building was left with only some spent materials and broken windows.
这座旧建筑只剩下一些废弃的材料和破碎的窗户。
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3.The government decided to recycle the spent materials from the construction site.
政府决定回收建筑工地的废弃材料。