名词
中文翻译:保留材料
同义词:
['retained materials', 'retained substances']
例句:
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1.The engineer used a new method to retain the material in the structure.
工程师使用一种新的方法来保持结构中的材料。
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2. The researcher found that certain chemicals could retain material in the soil.
研究者发现某些化学物质可以在土壤中保留材料。
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3. The company had to retain material from the factory for testing purposes.
公司不得不从工厂保留材料用于测试目的。