Stalactites form as trickling water deposits tiny quantities of rock over hundreds or thousands of years.

含有微量岩石沉积物的水流经过千万年时间形成了钟乳石。

All they could hear apart from their footsteps was the gentle drip of water trickling down the walls.

他们听见，除了他们自己的脚步声外，还有水珠顺着墙壁缓缓滴落的声音。

Since trickling water, hungry caterpillars and suffering plants are all very quiet, it seems worth investigating whether plants face similar problems.

由于滴水、饥饿的毛毛虫和受苦的植物都非常安静，因此似乎值得研究植物是否面临类似的问题。