别忘了擦擦架子上的灰尘。

Don't forget to ___dust the shelves.

建筑工地扬起一片尘土。

The construction site is raising a cloud of ___dust.

星云由气体和尘埃组成。

The nebula is composed of gas and ___dust.

我每周都会给书架除尘。

I ___dust the bookshelf every week.

窗台上积了一层厚厚的灰尘。

There was a thick layer of ___dust on the windowsill.