动词短语
中文翻译：对
同义词：
['address', 'converse with', 'speak to', 'talk to']
例句：
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1. Please speak at the meeting when you have a question.
如果你有问题，请在会议上发言。
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2. He spoke at the conference about his new project.
他在会议上就他的新项目发表了讲话。
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3. The teacher asked us to speak at the class about our favorite subject.
老师让我们在班上谈论我们最喜欢的科目。