leftover

1. N-PLURAL You can refer to food that has not been eaten after a meal as leftovers. 剩余食物

Refrigerate any leftovers. 把剩饭冷藏起来。

2. ADJ You use leftover to describe an amount of something that remains after the rest of it has been used or eaten. 剩余的[ADJ n]

...leftover pieces of wallpaper. …剩余的壁纸。