形容词
中文翻译：粗糙的
同义词：
['rough', 'thick', 'coarse', 'thick-skinned', 'rough-skinned']
例句：
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1. The coarse sand was hard to walk on.
粗糙的沙子很难走。
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2.The thick layer of snow made it difficult to see through the trees.
厚厚的雪层使透过树林的视线变得困难。
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3. The coarse material is not suitable for making clothes.
这种粗糙的材料不适合用来制作衣服。