水正慢慢渗过滤纸滴入杯子里。

The water is ___percolating through the filter paper into the cup.

这个新政策的消息正在慢慢传播到各个部门。

The news about the new policy is ___percolating through all departments.

随着更多客人到来，聚会气氛开始活跃起来。

The party started ___percolating as more guests arrived.