可数

discussion可数吗？与含义有关

The plan may well be over-ambitious, and is clearly open to discussion. (该计划可能过于雄心勃勃，显然是可以讨论。) [柯林斯高级学者辞典]

Food(食物)作为杂烩名词，“数词+foods”很难表达有信息感的量，所以就量而言，food前不能用数词，也就是它不可数，如【例句1】Pat had prepared food and drink for the work party. (帕特为工作聚会准备