词典释义：
双语例句
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The depurator could purify air microorganisms at the workshop, with a purifying rate of 53.1%, but it did not reach the standards of clean air.
空气净化器虽然能够净化生产车间中的空气微生物，但其净化率为53.1%，净化后的空气未达到洁净空气的标准，因此还应同时采取其他相应净化措施。