非飞卖品
tube英:[tjuːb]美:[tuːb]n.(金属、塑料、橡胶等制成的)管，管子; 管状物; (由软金属或塑料制成的带盖的、盛膏状物的)软管;v.给…装上管子; 插管（以助呼吸); 用管道运输;例句:I work in the extruded tube business.我做挤压管生意。复数:tubesmule英:[mjuːl]美:[mjuːl]n.骡子; 越境运毒者; (室内使用的)拖鞋;例句:He is as stubborn as a mule.他像骡子一样倔。复数:mules
