VOA常速英语:US Presidential Race Is Hugely Expensive, Highly Regulated

spend on把…花在…
例句：He doesn't spend much time on his homework.
他花在作业上的时间不多。

2. In 1992, the two parties raised a total of $135 million. Sixteen years later, in 2008, they collectively took in $1.68 billion.

take in收入，进账
例句：Our shop takes in twice as much money every day as it used to.
我们商店每天的收入是过去的两倍。

3. "The advertisements that cost millions of dollars to run, be it radio or TV, the traveling expenses throughout the country - it's going to cost a lot of money for these candidates to travel on a daily basis, and also the massive campaign organizations that these candidates need to put together," said Darling.

put together组成整体
例句：It's easier to take a machine to pieces than to put it together again.
拆卸一部机器比重新装配起来容易。

4. Current federal regulations limit presidential candidate contributions from individuals to $2,500, with most organizations limited to $5,000. Corporations and unions face strong restrictions.

limit to (把…)限制在…, 局限于…
例句：We must limit the expenses to $100 a month.
我们必须把开支限制在每月100美元。

5. Along with creating the F.E.C., Congress also created a system of public financing, under which, in exchange for government funds, candidates accept limits on other cash they might raise.

in exchange for交换
例句：Tom gave Helen an apple in exchange for a piece of cake.
汤姆用一个苹果与海伦换一块蛋糕。

6. The messaging they put out is not limited.

put out出版; 发行; 发布
例句：The government will put out a new statement tomorrow.
政府将于明天发布一项新声明。

7. Observers say the 2012 presidential election may be the first in which this outside "PAC" money may wind up exceeding what the candidates and their parties officially raise for themselves.

wind up以…告终（或终结）
例句：I think it's time to wind up this meeting.
我认为现在该结束这个会议了。