moisture and ash-free

例句：

1. 1.The new product is designed to be moisture and ash-free.
   这款新产品设计为无湿气和无灰尘。
2. 2.The factory has achieved moisture and ash-free standards.
   这家工厂已经达到了无湿气和无灰尘的标准。
3. 3.The new building is moisture and ash-free, ensuring a healthy environment for employees.
   这座新建筑无湿气和无灰尘，为员工提供了一个健康的工作环境。