名词
中文翻译：平整层
同义词：
['smooth layer', 'leveled layer']
例句：
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1.The engineer used a leveling layer to ensure the foundation was level.
工程师使用一个平整层来确保地基是水平的。
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2.The construction crew applied a leveling layer to smooth the surface before starting work.
施工队在开始工作前，给表面涂上了一层平整层以使其平滑。
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3. The builder used a leveling layer to ensure the walls were straight and level.
建筑者用平整层确保墙壁直且水平。