Mostly they gather dust. But a project based in Washington is putting unwanted bikes from the United States to good use in developing countries.

VOA: special.2009.11.16

I find it again in the Christian tradition, when we do the... in Lent, like "You're from dust and to dust you will return."

在基督教传统中我发现，大斋节的传统,如“尘归尘土归土“之类“

普林斯顿公开课 - 人性课程节选

They stopped at every stream to drink and wash the dust from their faces.

VOA: special.2009.08.27

He makes enough money from the sale of gold dust to take care of his wife and three children.

VOA: standard.2010.04.22

Mangroves are the most readily available source of firewood for fires to boil seawater and what is called "salt dust" scraped from the soil.

VOA: standard.2010.03.29

"From dust we have come, to dust we shall return. In no way would this diminish all those very important human dimensions to the experience of death.

VOA: standard.2010.07.22

But the final resting place where there would be not, if you like,a heavy mark of the person, but rather the person is consigned to dust from where they came."

VOA: standard.2010.07.22