The TPC reckons his plans would cost $500 billion-900 billion in 2015, depending on how the amounts are calculated.

税收政策中心声称，根据计算数量的方法不同，罗姆尼的计划将在2015年花费5000亿至9000亿美元。

Doctor Wong carefully calculated the amount of medicine needed for the weight of the tiger.

黄医生仔细计算了老虎的体重所需的药物量。

Scientists have calculated the total amount of plastic ever made: 8.3 billion tonnes.

科学家们计算出塑料的总产量：83 亿吨。

You do get better precision and accuracy, and because the amount of material used and the way it's mixed together can be calculated beforehand, waste can be pretty much eliminated.

你确实获得了更好的精度和准确度，而且因为使用的材料量和混合方式可以预先计算出来， 所以几乎可以消除浪费。