名词
中文翻译：平墙
同义词：
['flat surface', 'flatroof']
例句：
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1. The flatwall is a perfect background for the painting.
平墙是这幅画的完美背景。
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2.The flat wall made it difficult to seethrough the window.
平墙使透过窗户的视线变得困难。
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3. The flat wall was paintedin a bright shade of blue.
平墙被刷成了明亮的蓝色。