千卡

例句：

1. 1. She needs to eat a lot of food to gain weight quickly.
   她需要吃很多食物才能快速增重。
2. 2. The marathon is a great way to burn off those extra calories.
   马拉松是一项很好的燃烧多余卡路里的方式。
3. 3. I need to exercise more to maintain my weight and prevent overeating.
   我需要更多锻炼来保持体重，防止过度进食。