留美老师带你每天说英文 第312期:卡路里是能量的单位
2020-04-20来源:和谐英语
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台湾籍旅美老师今天交给我们的句子是：
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.
卡路里是能量的单位。他是一公斤的水上升摄氏一度所需的能量。
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