动词短语
中文翻译：变薄
同义词：
['decrease', 'diminish例句：1. The population is thinning out as the economy improves.（随着经济的改善，人口正在减少。）']
例句：
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1. The population is thinning out as the economy improves.
随着经济的改善，人口正在减少。
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2. The company has been thinning out over the past few years.
这家公司在过去几年里一直在减少员工。
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3.The demand for this product is thinning out as competition increases.
随着竞争的加剧，对这种产品的需求正在减少。