Rainforests have their own perfect system for ensuring their own survival; the tall trees make a canopy of branches and leaves which protect themselves, smaller plants, and the forest animals from heavy rain, intense dry heat from the sun and strong winds.

雨林有自己完善的系统来确保自身的生存；高大的树木有枝叶形成的树冠层来保护自身，树冠也保护着矮小的植物以及动物不受暴雨、酷暑及强风的侵扰。

youdao

The branches and leaves are luxuriant but well-spaced.

枝叶扶疏。

《新英汉大辞典》

It had many branches and leaves.

它有许多树枝与树叶。

youdao

You have n branches on the tree and you count the number of leaves and sum them up.

一共有n根树枝,你数了叶子的数量然后把他们加起来

耶鲁公开课 - 金融市场课程节选

He noticed that the branches and leaves followed the 1-2-3-5-8-13-et cetera growth series discovered centuries ago by Italian mathematician Leonardo of Pisa.

FORBES: 3 Excellent Elliott Wave Technical Analysts

Taking away the thinned-out material is difficult, and sloppy thinning can increase the risk of fire by leaving dry branches and leaves on the forest floor.

ECONOMIST: The fires return

Immediately they did this, however, people started thinking 'Aha, this is a special plant, ' and they climbed over the fence and started to take off little branches and leaves and pieces of bark.

NPR: The Little Coffee Plant that Wouldn't Die