名词
中文翻译：存在模式
同义词：
['existence model', 'voice model']
例句：
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1. The existence of this model is crucial for its effectiveness.
这个模型的存在对于其有效性至关重要。
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2. The voice model is used to analyze the speech data.
语音模型用于分析语音数据。
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3. The existence of this model has been widely recognized in the industry.
这种模型的存在在业界得到了广泛认可。