dollar是可数名词,dollars是复数，,如:three dollars。
例句：Make it a round figure ─ say forty dollars.
凑个整数——就四十块钱吧。
It cost somewhere around two thousand dollars.
买下来要花大约两千元。
He gave me five dollars, same as usual.
和平时一样，他给了我五块钱。
We calculated the cost to the nearest 50 dollars.
我们计算费用约为50元。
He had run up credit card debts of thousands of dollars.
他积欠了数千元的信用卡借款。
Copies are available for two dollars each.
两元一份。
Taylor offered him 500 dollars to do the work.
泰勒愿出500元雇他做这件工作。
You will be paid in American dollars.
你的报酬将以美元支付。
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