linear change on reheating

例句：

1. 1. After the meal, I like to reheat my leftovers for lunch.
   餐后，我喜欢将剩菜剩饭重新加热作为午餐。
2. 2. Thesoup needs to be reheated before serving.
   汤需要重新加热后才能上桌。
3. 3. Wecan reheat the leftovers in themicrowave.
   我们可以在微波炉里重新加热剩下的食物。