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"Yellowed" is the English equivalent of "变黄了" in Chinese. It is used to describe when something has turned yellow in color, typically due to age or exposure to light. The verb "yellow" is a transitive verb, meaning it requires an object.

For example:

The pages of this book have yellowed with age. (这本书的页面因为年龄而变黄了。)
The white shirt yellowed in the sun. (白色衬衫在阳光下变黄了。)

"Yellow" as a verb is derived from the adjective "yellow", which is used to describe the color of something. The color yellow is associated with the color of ripe lemons, the sun, and gold, and the word "yellow" comes from the Old English word "geolu" which means 'yellow'.

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