没有复数形式，因为ice cream表物质类名词为不可数名词，中文意思是n,冰淇淋

It has 25 calories less than ordinary ice cream.它的热量比普通的冰淇淋少25卡路里。

I added a dollop of vanilla ice cream to the pie.

我在馅饼中加了一块香草冰淇淋。