同样人类也是懒惰的，常常在某片土地上取走所有的树木而不是移走一半或更少的树木。

Also humans are lazy and often take all trees upon a given piece of land rather than removing half or less of the trees.

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这意味着树木从空气中产生的能量更少。

That means trees produce less energy from the air.

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这意味着树木从空气中产生的能量更少。

That means trees produce less energy from the air.

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