名词
中文翻译：减少线
同义词：
['decreasing line', 'decreasing curve', 'declining line例句：1. The population is steadily decreasing year by year.（人口逐年稳步减少。）']
例句：
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1. The population is steadily decreasing year by year.
人口逐年稳步减少。
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2. The price of oil is showing a decreasing trend.
油价正在呈现下降趋势。
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3. The graph shows a diminishing line of the population growth rate.
图表显示了人口增长率的递减线。