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To evaluate the efficacy of using feather bedding in the control of asthma symptoms.
评估使用羽绒寝具对控制气喘症状的疗效。
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Cotton bedding set of many designs, available with natural down feather and also synthetic fiber filling.
棉被褥一套多种设计，可与天然羽绒，也合成纤维填充。
The feather-bedding that required firemen on diesel engines into the 1970s is gone, and most on-board personnel work hard.
CENTERFORSECURITYPOLICY: Not a model railroad
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