Is every country's monetary unit different?

每一国家的货币单位是否不一样？

It's the ruble, the basic monetary unit of the Russian Federation.

俄罗斯联邦的基本货币单位叫作卢布。

There were various forms of payment, all of it based on trade rather than monetary units.

有多种支付方式，所有这些都基于贸易而不是货币单位。