在19考研英语一翻译部分，原文讲述了一位美国教授在课堂上与学生互动的场景。以下是对该段落的翻译：
As the American professor entered the classroom, the students greeted him with a mixture of excitement and curiosity. The professor, known for his engaging teaching style, began the lesson by asking the students to share their thoughts on the topic of the day. The students, eager to participate, eagerly contributed their ideas, creating a lively and interactive atmosphere.
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