一些人相信降低富人税率会产生涓滴效应，最终惠及低收入人群。

Some believe that reducing taxes for the rich will create a ___trickle-down effect, eventually benefiting low-income groups.

公司的新政策花了很长时间才慢慢传达到基层员工那里。

The company's new policy took weeks to ___trickle down to the front-line staff.