měi yuán / cháng qī / shì / guó jì mào yì / hé / jīn róng shì chǎng / zhōng / zuì zhòng yào / de / chǔ bèi huò bì / zhī yī

美元长期是国际贸易和金融市场中最重要的储备货币之一。

The US dollar has long been one of the most important reserve currencies in international trade and financial markets.