It sounds paradoxical, because the idea behind this hypothesis is that the red pigment is made in autumn leaves to protect chlorophyll, the light-absorbing chemical, from too much light.

这听起来很矛盾，因为这一假设背后的理念是，树叶在秋天产生的红色素是用于保护叶绿素这种吸收光的化学物质，以免它吸收过多的光。

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The leaves fell in autumn.

在秋天树叶落了。

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I like wandering around the park in autumn, observing the golden leaves falling and white clouds drifting.

秋天，我喜欢在公园里闲逛，看着金色的叶子飘落和白色的云朵飘走。

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In the fall, visitors can watch the sugar maple trees surrender their colorful autumn leaves.

VOA: special.2009.01.05

Virgil alludes to just this passage in Homer when he describes the entrance of a whole crowd of people in to the underworld as "the falling of leaves in the early frost of autumn."

维吉尔只是在荷马中影射了这点,他描述了通往人群拥挤的地狱的入口,如同“在深秋严寒中无情飘落的叶子“

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Visitors enter the park via a broad, pebbled avenue lined with twin rows of gingko trees, considered by many to be one of the most beautiful sights in the capital, especially in the autumn when golden leaves cover the path and in spring when the trees turn a fresh green.

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The sky had gone gray and the autumn leaves in the trees shuddered in the cooling breeze.

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For instance, in the autumn, leaves stay on the trees and the bark falls off.

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