名词
中文翻译：方头螺栓
同义词：
['square head bolt', 'square-headed bolt']
例句：
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1.The car was fixed by replacing the square-head bolts.
这辆车被替换了方头螺栓而修好了。
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2.The engineer used a square-head bolt to secure the roof.
工程师用一个方头螺栓来固定屋顶。
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3.The construction workers were using square-head bolts to reinforce the walls.
建筑工人正在使用方头螺栓加固墙壁。