dust removal 除尘;
dust collector 吸尘器;
coal dust 煤尘;
dust control 防尘
A thin layer of dust covered everything.
所有的物品上都积了薄薄的一层灰尘。
That guitar\'s been sitting gathering dust for years now.
那把吉他已尘封多年。
A film of dust coated the table.
桌上覆盖着一层灰尘。
水利万物而不争,
而万物莫能与之争。