据估计，生产单位卡路里热量的牛肉，需要八倍以上的谷物饲料，而且肉类消费的增长会引起对谷物需求的乘数效应。
Producing a single calorie of beef can, by some estimates, require eight or more calories of grain feed, and expanded meat consumption therefore has a multiplier effect on demand for grains.
所有食物除了水之外，都会供应热量，而这些热量是我们身体所需要的，现时所有的热量计算单位是卡路里。
This is the number of calories your body would need, while at rest, to keep functioning.
卡路里是热量的量度单位，一个卡路里就是要将一克水的温度提升摄氏一度所需的热量。
A calorie is the amount of energy needed to raise the temperature of one gram of water by one degree Celsius.
卡路里是热量的量度单位，一个卡路里就是要将一克水的温度提升摄氏一度所需的热量。
A calorie is the amount of energy needed to raise the temperature of one gram of water by one degree Celsius.
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