人要维持生命，每天需要1600千卡路里(维生卡路里)。
For man, maintenance of life requires about 1600 kilocalories a day (" maintenance calories ").
将你每天喝的星冰乐换成路易波士茶——星巴克现在就有的卖——可以帮助你每月少摄入数千卡路里。
Ditching your daily Frappuccino for a cup of rooibos—Starbucks now sells it—could save you thousands of calories per month.
每克蛋白质是4卡路里，所以这位54.5千克、每天需要大约54克蛋白质的跑步者每天有200到220千卡的能量来自蛋白质。
One gram of protein equals 4 calories, so our 120-pound runner, who needs approximately 54 grams of protein, should allow 200 to 220 calories for protein each day.
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