除尘的英文：
aspirating
dedusting

Rock dusting
撒岩粉除尘法

They aspire to freedom.
他们渴望得到自由。

Aspire to inspire before you expire.
断气之前，随时追求新的生命力。

He is an aspirant to the presidency.
他是个争当总统的人。

Reunification of the motherland is the aspiration of the whole nation.
实现国家统一是民族的愿望

That is not something I particulary aspire to at this moment.
目前，这不是我特别追求的。