名词
中文翻译：衰败期
同义词：
['declining period', 'decline period']
例句：
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1.The company's sales have been declining for the past two years.
过去两年，公司的销售额一直在下降。
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2. The population of the city is experiencing a significant decline in recent years.
近年来，该市的人口出现了显著的下降。
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3.The economy is expected to enter a recessionary period as soon as next year.
预计明年经济将进入衰退期。