名词
中文翻译：死中心标记
同义词：
['dead center', 'dead center point', 'dead center line']
例句：
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1. Theball was hit perfectly at the dead center of the field.
球在场地中央被完美击中。
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2. The artist drew a perfect circle on the paper with a dead center mark.
艺术家在纸上画了一个完美的圆形，中间有一个中心标记。
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3. The teacher explained the concept of dead center to the students.
老师向学生们解释了“死中心”的概念。