改错: Can I pay in US dollar?
dollar 应改用复数,因为这样用的 dollar 是可数名词:
Can I pay in US dollars? 我可以用美元支付吗?
又如:
The price of oil is given in US dollars. 石油的价格是以美元标价的。
The borrowings were denominated in US dollars. 借款以美元结算。