bucks和dollars区别（0.1美元用dollar还是dollars）

buck: a buck就是一美元。bucks是buck的复数

It will cost you about fifty bucks.

dollar: 代表美元、美国货币单位、一美元。dollars是dollar的复数

She gets paid seven dollars an hour.

In early trading in Tokyo, the dollar fell sharply against the yen.

东京市场早盘，美元对日元比价急剧下跌。