名词
中文翻译：模态运算符
同义词：
['modality operator', 'modality operator', 'modality operator']
例句：
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1. The modal operator is used to represent the possibility of an event occurring.
模态运算符用于表示事件可能发生的可能性。
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2.In mathematics, the modal operator is used to express uncertainty or probability.
在数学中，模态运算符用于表达不确定性或概率。
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3. The modal operator is a crucial concept in logic and philosophy.
模态运算符是逻辑和哲学中一个至关重要的概念。