名词
中文翻译：墙壁
同义词：
['wall', 'void', 'cavity例句：1. The wall was constructed using bricks and mortar.（这堵墙是用砖和砂浆建造的。）']
例句：
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1. The wall was constructed using bricks and mortar.
这堵墙是用砖和砂浆建造的。
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2.The void between the two walls is filled with sand.
两堵墙之间的空隙被沙子填满了。
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3. The void in the wall could be filled with insulation to improve energy efficiency.
墙上的空洞可以用保温材料填充以提高能源效率。