Leaves are falling down to the ground.

叶子纷纷落下，掉落在地上。

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The leaves are falling from the tree.

树叶从树上掉下来了。

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The leaves are falling, the air is crisp.

叶子正在落下，空气是清爽的。

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But what we have here is an image of the beauty of that change, the beauty of the fact that the leaves are falling.

但是我们看到的是一幅美丽的变化的图像，叶子在飘落带来的美丽图画。

耶鲁公开课 - 弥尔顿课程节选

Cyclical tools are like trees, whose falling leaves fertilize the soil in which they grow.

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