Use a produce brush on rough surfaces like melons and rub smooth surfaces, like apples, with your hands.

像瓜类这种表皮粗糙的水果，可以用农产品专用刷子来刷洗；苹果等外表光滑的水果可以用手搓洗。

Baucis used a chip of broken clay to balance the wobbly table's legs and rubbed its surface with mint until it smelled sweet and fresh.

鲍西斯用一块碎粘土来平衡摇摇晃晃的桌子腿，并用薄荷擦桌子表面，直到它闻起来甜美清新。

So what's happening is that as skis move, they rub the surface of the snow and warm it up, creating a thin layer of water, which helps them slide along.

所以事实上随着滑雪板的移动，雪的表面温度由于摩擦而升高，形成一层薄薄的水帮助其滑动。