The main cause is that density of bamboo forests is too big and ventilation and light is not so good.

主要是竹林密度过大，林内通风透光不良所致。

youdao

The main cause is that density of bamboo forests is too big and ventilation and light is not so good.

主要是竹林密度过大，林内通风透光不良所致。

youdao