房间里已经堆积起了厚厚的一层灰尘。

Dust accumulated in the empty house.

youdao

房间里已经堆积起了厚厚的一层灰尘。

A thick layer of dust had accumulated in the room.

youdao

如果我们不打扫房间，灰尘很快就会堆积起来。

Dust soon accumulates if we don't sweep our rooms.

youdao

如果我们不打扫房间，灰尘很快就会堆积起来。

Dust soon accumulates if we don't sweep our rooms.

youdao