名词
中文翻译：大概范围
同义词：
['rough estimate', 'approximate range']
例句：
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1.The projected completion date for the new building is within a ball-park figure of six months.
新建筑预计完成日期在六个月的时间范围内。
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2. The sales team has set a ball-park figure for this year's revenue growth.
销售团队为今年的收入增长设定了一个大致的估计数字。
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3.The cost of the project is estimated to be around $5 million, which is a ball-park figure.
该项目的成本估计在500万美元左右，这是一个大致的数字。