名词中文翻译
中文翻译：水平标记
同义词：
['level line', 'grade line']
例句：
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1.The car is parked at a level mark on the roadside.
汽车停在路边的水准线上。
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2. The engineer marked the level mark with a pen.
工程师用笔标出了水准线。
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3.The construction workers need to check the level mark before starting work.
建筑工人在开始工作前需要检查水准线。