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Jacket: Black low mid or high density polyethylene.
护套：黑色低密度或中密度或高密度聚乙烯。
youdao
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The tests measured range of hearing over low, mid and high noise frequencies.
这些测试测量了对低、中、高频率噪声的听觉范围。
youdao
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The tests measured range of hearing over low, mid and high noise frequencies.
这些测试测量了对低、中、高频率噪声的听觉范围。
youdao