我需要打扫房间里的灰尘。

Wǒ xūyào dǎsǎo fángjiān lǐ de huīchén.

I need to clean the dust in the room.

别忘了擦拭家具上的灰尘。

Bié wàngle cāshì jiājù shàng de huīchén.

Don't forget to wipe off the dust on the furniture.

他用抹布擦拭桌子上的灰尘。

Tā yòng mābù cāshì zhuōzi shàng de huīchén.

He uses a cloth to wipe off the dust on the table.