一流 (yī liú) means “top quality; front ranking”. It is an HSK 6 Chinese word in the HSK 3.0 vocabulary.
Practice each character:
这所大学是一流的学校。
Zhè suǒ dàxué shì yīliú de xuéxiào.
This university is a top-quality school.
Updated: 2026-05-27