名词
中文翻译：粗糙的线
同义词：
['rough', 'coarse string', 'thick string']
例句：
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1.The roughstring was used to tie the knots on the rope.
粗糙的线被用来绑在绳子上的结。
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2. The old man used a roughstring to repair his broken bicycle.
老人用粗糙的线修理坏了的自行车。
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3. The roughstring had become worn and frayed from years of use.
粗糙的线因为多年的使用而磨损和起毛了。