名词
中文翻译：填缝剂
同义词：
['gap filler', 'gap filler agent', 'gap filler material']
例句：
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1. The gap filler was applied to the crack in the wall.
在墙上的裂缝上涂抹了填缝剂。
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2. The gap filler is used to repair and reinforce the structure.
填缝剂用于修复和加固结构。
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3. The gap filler was applied evenly to ensure a smooth surface.
填缝剂被均匀涂抹，以确保表面平滑。