名词
中文翻译：弧顶
同义词：
['arc center', "arc point例句：1. The arc spot is the focal point of the circle's movement.（弧顶是圆周运动的核心点。）2. The astronaut landed safely at the arc spot on Mars.（宇航员安全着陆在火星的弧顶。）"]
例句：
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1. The arc spot is the focal point of the circle's movement.
弧顶是圆周运动的核心点。
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2. The astronaut landed safely at the arc spot on Mars.
宇航员安全着陆在火星的弧顶。
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3.The arc spot was used to measure the distance between the Earth and the Moon.
弧顶被用来测量地球和月球之间的距离。