名词
中文翻译：近似
同义词：
['approximate', 'approximation', 'approximateness']
例句：
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1. The distance between two points is the length of their line segment.
两点之间的距离是它们线段的长度。
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2.The cost of this product is approximately $50.
这个产品的成本大约是50美元。
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3.The physicist made an approximation to the speed of light.
物理学家对光速进行了近似计算。