When you skate over the ice, the heat caused by the skate blade rubbing against the ice makes the ice melt.

当你在冰上滑冰时，冰刀与冰面摩擦产生的热量使冰融化。

Plus, a person wearing normal shoes, which put less pressure on the ice than a thin ice skate blade, can still slip.

另外， 穿着普通鞋子的人仍然会滑倒，这种鞋子对冰的压力比薄冰刀刀片小。