名词
中文翻译：Unknown
同义词：
['tone', 'intonation', 'pitch', 'pronunciation']
例句：
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1.The teacher's tone was serious when he spoke to the students.
老师对学生讲话时语气很严肃。
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2.His speech had a strong intonation that made it easy to understand.
他的演讲语速适中，容易理解。
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3.She used a softer tone to make her message more persuasive.
她用更柔和的语调来使她的信息更有说服力。