物体表面越粗糙不平，它的分子就越容易更多地与接触表面的分子相粘合，因此就会产生更大的摩擦力。
The more rough and jagged something is, the more easily more of its molecules will come into contact with molecules on the surface it touches, and thus the greater force of friction they will exert.
欧洲卫星拍摄的一张冰舌全景图像展示了冰川崎岖不平的表面，深深的冰裂缝使得其表面如此粗糙。
A European satellite image of the entire glacier tongue shows the ice body's rugged surface. Deep cracks-crevasses-give the glacier tongue its rough texture.
在“aspros”成为希腊语之前，它实际上曾经是拉丁语，意思是“粗糙的”，被用于形容雕刻品那凹凸不平的表面和硬币两面的不规则的的起伏。
Before the word aspros came to Greek it had actually been Latin asper meaning "rough" and was applied to the uneven surfaces of carvings and the faces stamped on COINS.
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