名词
中文翻译：宣布者
同义词：
['announcer', 'proclaimer', 'proclaiming']
例句：
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1. The president announced the new policy during his speech.
总统在演讲中宣布了新政策。
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2. The annunciator stepped forward to make the announcement.
宣布者迈步向前宣布。
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3. The annunciator's voice was heard throughout the room.
宣布者的声音在整个房间里都能听到。