leftover food

基本解释

Later, when Zeng Zi's son Zeng Yuan served Zeng Zi, after Zeng Zi finished eating, Zeng Yuan would put away the food without asking about how to deal with the leftover food.
后来曾子的儿子曾元侍奉曾子吃饭，吃完就把酒肉收了，也不问问父亲如何安排；
If I have leftover food (food that I prepared previously and saved), then I heat it up using the microwave, stove, or oven. To heat up food means to raise the temperature, to make it hot.
如果我有剩饭剩菜，那么我就可以用微波炉/炉灶/加热。加热食物就是说升高温度来让它们变热啦。
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A: I was just wondering if many Chinese people take their leftover food home from a restaurant.
我想知道中国人在饭馆吃完饭之后，会不会把没吃完的东西打包带回家。

The odor of sweat, leftover food, and blackboard chalk filled the air.
NEWYORKER: Waiting