名词
中文翻译：秋季的
同义词：
['autumnal', 'autumnal例句：1. The leaves of the trees turn yellow and fall off in the autumnal air.（树叶在秋风中变黄并落下。）']
例句：
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1. The leaves of the trees turn yellow and fall off in the autumnal air.
树叶在秋风中变黄并落下。
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2.Autumn is a beautiful season with warm colors and crisp air.
秋天是一个美丽的季节，有着温暖的颜色和清新的空气。
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3. The autumnal equinox marks the beginning of the harvest season.
秋分标志着收获季节的开始。