amount

quantity, amount, number, sum

这些名词均有“总数、总量”之意。
quantity: 书面用词，指事物的总量和总数量，侧重大批计量，含准确测量的意味。
amount: 普通用词，与quantity近义，但强调整体，指把所有数量、重量及度量归并在一起得出的总数。
number: 普通用词，指人或物的数目，强调数的概念。
sum: 普通用词，指简单加算的结果。

名词 amount:

1. how much of something is available
2. a quantity of money
   同义词：sum, sum of money, amount of money
3. how much there is of something that you can quantify
   同义词：measure, quantity
4. a quantity obtained by the addition of a group of numbers
   同义词：sum, total

动词 amount:

1. be tantamount or equivalent to
2. add up in number or quantity
   同义词：total, number, add up, come
3. develop into
   同义词：come, add up

1. The amount of unemployed capital is very large.
   未被利用的资金数量很大。
2. The railroad gives free transportation for a certain amount of baggage.
   铁路对一定数量行李免费运送。
3. It all amounts to a lot of hard work.
   那一切意味着大量艰苦工作。
4. A large amount of money is spent on advertisements every year.
   每年都要花费大量金钱在广告上。
5. My savings amount to $2000.
   我的储蓄共达2000美元。