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1. All down linens of MARTHA can be changed and filled in by mercerized Cotton.
   玛莎的所有羽绒产品可以改为丝光棉填从料。
2. Comparing the ultrasound is the first non-ultrasonic cleaning and decontamination down the rate.
   首先比较的是超声波和非超声波清洗羽绒的去污率。