i don't have and mince.but i have some steak 中的mince和steak为什么不用加S

i don't have and mince.but i have some steak 中的mince和steak为什么不用加S
i don't have and mince.but i have some steak 中的mince和steak为什么不用加S

i don't have and mince.but i have some steak 中的mince和steak为什么不用加S
因为两个都是不可数的

mince 和steak 都是不可数的名字，不加S的。