热量所需量

例句：

1. 1. The food has a high calorific value, so we need to watch our portions.
   这食物的热量很高，所以我们需要控制食量。
2. 2. Calorific values vary depending on the source of the energy.
   热量值取决于能源的来源。
3. 3. The calorific content of the food is listed on the nutrition label.
   食品的热量含量在营养标签上列出。