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[每日说英文] 留美老师带你每日说英文 第430期:叶绿素的分解
Chlorophyll breaks down and is replenished all summer long.2015-10-30 编辑：max
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今年的秋季，在脸书、推特等社交媒体上，网友们也在讨论秋季真实的颜色——比如大自然固有的多彩颜色。2016-11-06 编辑：Emma
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2015-10-30 编辑：max
2016-11-06 编辑：Emma
