One reason is straightforward: on many trees, the leaves that are the reddest are those on the side of the tree which gets most sun.

有个原因很简单：在许多树上，最红的叶子是那些在树的一侧得到最多阳光的叶子。

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For instance, without a tree to absorb radiation from the Sun, to offer shade, the full intensity of that radiation reaches the ground.

例如，如果没有树木来吸收太阳的辐射并提供树荫，那么太阳辐射就会完整地到达地面。

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As Mr. Flanagan leaves the glaring sun of the prairie and enters the shady grove, his eyes search for specific tree.

当弗拉纳根先生从牧场上耀眼的阳光处走进绿树成荫的小树林时，他的眼睛搜寻着特定的一棵树。

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Spots of yellow-white sun trembled in brown tree-shadows on the lake-edge.

NEWYORKER: History of a Disturbance

At the University of Yangon, Ni Ni Myint, director of the Historical Research Center, gazes across the sun-dappled lawns and tree-lined lanes of the busy campus.

CNN: Say You Want an Education

At first it looks more like a fat white and yellow fish swimming through a green sun-speckled ocean, as if it and the tree and the grass were occupants of a fantastical aquarium.

ECONOMIST: Leon Kossoff