每日口說挑戰 食物的熱量標示能信嗎？

今日挑戰句子

A calorie is a unit of energy. It's technically the amount of energy needed to heat up a kilogram of water by 1 degree Celsius.

卡路里是能量的單位。他是一公斤的水上升攝氏一度所需的能量。