dollar是不是可数名词

dollar常见句型

ty dollars will be ample for the purpose.

有30美元足够用了。

$ 200 was spent.

花了200港币。

it foolish of him to walk ten miles to return half a dollar he'd overcharged a customer?

他跑了十英里路退还给顾客多收的50美分愚蠢吗?

balance on your account is 5 dollars.

你的账上还剩5美元。

put the cost at one hundred dollars.

他把费用定在100美元。