Rummage sale is an event at which second hand goods are sold, usually by an institution such as a local Scout group or church, as a fundraising or charitable effort.

清仓义卖会是出售二手货的一种活动，通常是当地的童子军或教堂等机构以募款或慈善为目的发起的。

Rummage sale is an informal, irregularly scheduled event for the sale of used goods by private individuals, in which sellers are not required to obtain business licenses or collect sales tax (though, in some jurisdictions, a permit may be required).

清仓义卖会是一种不定期举行的出售私人旧物的非正式活动，卖主不需要持有营业执照或缴纳营业税（不过，在某些行政辖区，需要出示售卖许可证）。

Example:

They had a rummage sale to get rid of all of their old furniture. 

他们举办了一场清仓义卖会，来处理他们所有的旧家具。