名词
中文翻译：自由边际
同义词：
['margin of error', 'marginof safety', 'margin of appreciation']
例句：
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1. The company's freemargin is shrinking due to rising costs.
由于成本上升，公司的自由边际正在缩小。
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2. The investment bank's margin ofsafety is high, which helps it weathermarket volatility.
这家投资银行的安全保障边际很高，这有助于它抵御市场波动。
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3. The stock market has a positive marginof appreciation for the next few years.
股市在未来几年将有积极的增值空间。