形容词
中文翻译：Unknown
同义词：
['annual', 'annualized', 'annuality例句：1. The flowering period of this plant is seasonal.（这种植物的花期是季节性的。）']
例句：
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1. The flowering period of this plant is seasonal.
这种植物的花期是季节性的。
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2. Seasonal changes in temperature are a common feature of the climate.
季节变化是气候的一个常见特征。
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3.The harvest season is always busy for farmers.
收获季节对农民来说总是很忙的。