名词
中文翻译：Unknown
同义词：
['introductory', 'introductional', 'preparatory']
例句：
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2.
在演讲或讲话之前
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3.
在演讲或讲话中
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1. Before the speech, the speaker gave a prefatorial note on the topic.
演讲前，演讲者对主题做了简要介绍。
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2. The teacher asked for a prefatorial statement from the student before starting the lesson.
老师要求学生在开始上课前做一个简单的自我介绍。
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3. In his prefatorial remarks, he touched upon some of the key points that would be covered in the presentation.
在他的开场白中，他提到了一些将在演示中讨论的关键要点。