名词短语
中文翻译：投影中心同义词
同义词：
['projection center', 'focus of projection']
例句：
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1. The projector is positioned at the center of the room.
投影仪放在房间的中央。
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2. The camera was focused on the center of the stage.
摄像机对准了舞台的中心。
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3. The team decided to concentrate their efforts on the center of the field.
球队决定将他们的努力集中在场地的中心。