灰塵, 塵土
fine, dry powder consisting of tiny particles of earth or waste matter lying on surfaces or carried in the air
:
• The old books were covered in a thick layer of dust.
舊書上覆蓋著一層厚厚的灰塵。
• A cloud of dust rose as the car drove away.
汽車開走時,揚起了一陣灰塵。