名词
中文翻译：点
同义词：
['center', 'focus', 'core']
例句：
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1.The point of the circle is to find the center of the figure.
这个圆的圆心是找到图形中心。
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2. The teacher pointed at the blackboard to emphasize the lesson.
老师指着黑板来强调这节课的内容。
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3.The scientist points to the star as proof of the universe's existence.
科学家指着那颗星作为宇宙存在的证据。