名词
中文翻译：下降
同义词：
['fall', 'decrease', 'reduce例句：1. The population has been declining steadily for the past decade.（过去十年里，人口一直在稳步下降。）']
例句：
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1. The population has been declining steadily for the past decade.
过去十年里，人口一直在稳步下降。
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2.The economy is expected to experience a decline in exports this year.
预计今年经济将经历出口下降。
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3. The company's revenue has been declining due to competition from new competitors.
由于面临新竞争者的竞争，该公司的收入一直在下降。