ice可数还是不可数用法是什么意思

It was difficult to maintain a secure foothold on the ice.

在冰上不容易站稳脚。

He gave a longing look at the ice cream.

他看了看那冰激凌，显出很想吃的样子。

I had another helping of ice cream out of pure greed.

我纯粹是因为嘴馋贪吃，又吃了一份冰激凌。

The kids still weren't full, so I gave them an ice cream each.

孩子们还没有吃饱，所以我给他们每人一份冰激凌。

The car skidded on the ice and went straight into the wall.

汽车在冰上打滑，径直撞到了墙上。