名词
中文翻译：皮肤粗糙
同义词：
['skin roughness', 'skin roughness degree']
例句：
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1.The man's face was covered in swarthiness from years of sun exposure.
这个男人的脸上因为多年日晒而布满了皱纹。
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2.The scientist measured the swarthiness of the soil to determine its fertility.
科学家测量土壤的粗糙度以确定其肥沃程度。
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3. The old woman had a swarthiness that made her look much older than she actually was.
这位老妇人的皮肤粗糙，使得她看起来比实际年龄要大得多。