orange [upgraded thickened]](橙色【升级加厚款】) blue [upgraded and thickened]](蓝色【升级加厚款】) green [upgraded and thickened]](绿色【升级加厚款】)

10 layers [the more layers, the more cost-effective]](10层【越多层越划算】) 9 layers [the more layers, the more cost-effective]](9层【越多层越划算】) 8 layers [the more layers, the more cost-effective]](8层【越多层越划算】) 7 layers [the more layers, the more cost-effective]](7层【越多层越划算】) 6 layers [the more layers, the more cost-effective]](6层【越多层越划算】) 5 layers [the more layers, the more cost-effective]](5层【越多层越划算】) 4 layers [the more layers, the more cost-effective]](4层【越多层越划算】) 3 layers [the more layers, the more cost-effective]](3层【越多层越划算】) 2 layers [the more layers, the more cost-effective]](2层【越多层越划算】) 1 layer [the more layers, the more cost-effective]](1层【越多层越划算】)