As trees grow taller and taller, the supply of these vital fluids begins to dwindle.

随着树越来越高，这种生命之液也越来越少。

All these bugs pierce their prey and suck out vital fluids.

所有这些虫子都会刺穿猎物并吸出重要的液体。

Once inside, the larvae feeds off vital fluids, making the host incredibly hungry and forcing it to eat more which in turn further feeds the larvae.

一旦进入体内， 幼虫就会以重要的液体为食，使宿主极度饥饿并迫使它吃得更多， 从而进一步喂养幼虫。