用法: 1 unit for measuring a quantity of heat 卡路里, 卡（热量单位）.
用法: 2 unit for measuring the energy value of food 大卡, 千卡（食物含能量的热值单位）: An ounce of sugar has about 100 calories. 一盎司的糖含约100大卡的热量. * Her diet restricts her to 1500 calories a day. 她的规定饮食限制她每天摄入1500大卡的热量.