trickle hydrodesul furization

例句：

1. 1. The rain slowly dripped from the sky onto the ground.
   雨慢慢地从天空滴落到地上。
2. 2. The river trickled through the forest.
   小溪缓缓流过森林。
3. 3. The water slowly trickled out of the tap.
   水慢慢地从水龙头流出。