形容词
中文翻译：Unknown
同义词：
['unstained', 'unbleached', 'undyed']
例句：
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1.The fabric is unimpregnated with any harmful chemicals.
这件织物没有使用任何有害化学物质。
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2. The painting was unimpregnated by watermarks.
这幅画没有被水印污染。
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3. The clothes are unimpregnated with static electricity.
这些衣服没有静电。