The stem of a tree supports its branches and leaves.

树干支撑着树枝和叶子。

It acts like a surrogate tree, supporting their large nest.

大楼就像是树的替代品，支撑着它们巨大的巢穴。

A single tree supports the lives of more than 250 species of plants and animals and so contributes to biodiversity.

一棵树可以支撑 250 多种动植物的生命，因此有助于生物多样性。