Clearing the soil, arranging tons of sand colored rocks and then planting everything took nearly a month.

VOA: standard.2010.08.09

and they... there's a clearing house and they give bids.

然后他们……有个票据交换所，他们投标。

有趣的研究课题 - SpeakingMax英语口语达人

Unconfirmed rumors on the ground say Hamas is clearing hundreds of millions of dollars a year.

VOA: standard.2010.06.17