例如，报纸由纸印制而成，而纸则来自树木。

For example a newspaper is made from paper that came from the wood of a tree.

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例如，树木的形状可能非常浑圆或是明显的三角形。

For example, trees can be very round or triangular in shape.

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树木将吸收的碳用于合成一些高分子化合物(例如纤维素)，进而生成更多的植株。

They use the carbon thus sequestered to make molecules like cellulose, and thus more tree.

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树木将吸收的碳用于合成一些高分子化合物(例如纤维素)，进而生成更多的植株。

They use the carbon thus sequestered to make molecules like cellulose, and thus more tree.

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