Protein and carbohydrate have 4 calories per gram, per unit weight.
每克每单位重量蛋白质和碳水化合物产生4卡路里。
2
Next every kilogram and every gram of weight that is sent to space has already been precisely calculated and treasured.
其次，送入太空的每一公斤甚至每一克重量，都是精打细算、十分珍贵的。
3
At supermarkets here, a 1,000-gram bag of quinoa, just over two pounds, costs the equivalent of $4.85, compared with $1.20 for a bag of noodles the same weight and $1 for a bag of white rice.