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

　　在冰上不容易站穩(wěn)腳。

　　He gave a longing look at the ice cream.

　　他看了看那冰激凌，顯出很想吃的樣子。

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

　　我純粹是因?yàn)樽祓捸澇�，又吃了一份冰激凌�?/p>

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

　　孩子們還沒(méi)有吃飽，所以我給他們每人一份冰激凌。

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

　　汽車在冰上打滑，徑直撞到了墻上。