美 + Noun
The character 美 (měi) is a short form for 美国 (America/United States) and also means 'beautiful.' When used as a prefix in financial contexts, it often refers to American currency, as in 美元 (US dollar). Context determines which meaning applies.
他在美元汇率最低的时候换了钱。
Tā zài měiyuán huìlǜ zuì dī de shíhòu huàn le qián.
He exchanged money when the US dollar exchange rate was at its lowest.
很多留学生选择去美读书。
Hěn duō liúxuéshēng xuǎnzé qù Měi dúshū.
Many international students choose to go to America to study.
美方代表下周将来北京访问。
Měi fāng dàibiǎo xià zhōu jiāng lái Běijīng fǎngwèn.
The American representatives will come to Beijing for a visit next week.