家具上覆盖着灰尘。

The furniture was covered in ___dust.

汽车呼啸而过时，一团灰尘在空中升起。

A cloud of ___dust rose in the air as the car roared past.

此外，乡村里比城市有更多的虫子和灰尘。

Also, in the countryside there are more bugs and ___dust than in the city.