果酱是不是可数名词

Heat the jam until it liquefies.

加热果酱直至其液化。

I had two jam sandwiches.

我吃了两个花生酱果酱三明治。

The bus was delayed in a five-mile jam.

公共汽车因长达五英里的`交通堵塞而延误。

Skim the scum off the jam and let it cool.

撇去果酱上的浮沫，让它冷却。

"Sorry Edward," I said, splattering the cloth with jam.

“对不起，爱德华，”我说道，把果酱溅到了桌布上。