晨光透过浓雾逐渐显现。

The morning light ___filtered ___through the dense fog.

远处的笑声透过打开的窗户逐渐传来。

The sound of distant laughter ___filtered ___through the open window.

关于政策变化的信息开始逐渐传到员工那里。

Information about the policy change began to ___filter ___down to the employees.