名词
中文翻译：下降
同义词：
['decrease', 'diminish', 'fall', 'reduce']
例句：
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1. The population of the city has been declining steadily for the past decade.
过去十年里，这个城市的人口一直在稳步下降。
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2. The economy is expected to experience a decline in exports due to the global trade war.
由于全球贸易战，预计经济将经历出口下降。
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3. The company's profits have been declining year by year due to competition from newer rivals.
由于新竞争对手的出现，公司的利润每年都在下降。