名词
中文翻译：Unknown
同义词：
['protractor', 'protractor', 'protractor']
例句：
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1.The engineer used a protractor to measure the angle of the wall.
工程师使用测距仪来测量墙的角度。
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2.The protractor helped the scientist to calculate the distance between two points on the map.
测距仪帮助科学家计算地图上两点之间的距离。
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3.The protractor was used to measure the length of the ruler.
测距仪被用来测量尺子的长度。