名词中文翻译
中文翻译：计数框
同义词：
['counting device', 'counting machine']
例句：
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1. The teacher used a counting frameto help the students practice their addition skills.
老师使用计数器帮助学生练习他们的加法技能。
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2. The engineer designed a countingframe that could accurately count the number ofitems in a warehouse.
工程师设计了一个计数器，可以准确计数仓库中的物品数量。
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3. The student used the counting frame tocalculate the total cost of the materials theyhad purchased.
学生使用计数器计算他们购买的材料的总成本。