名词短语
中文翻译：数字的鸟同义词
同义词：
['number of birds', 'number of animals']
例句：
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1. The number of dees in the park is increasing rapidly.
公园里鸟的数量正在迅速增加。
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2. The number of dees in the park is decreasing due to pollution.
由于污染，公园里的鸟的数量正在减少。
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3. The number of dees in the park is a significant indicator of environmental health.
公园里鸟的数量是环境健康状况的一个重要指标。