HSK 7–9 · Practice

汗马功劳

hànmǎ-gōngláo

great contributions; distinguished services

他为公司的发展立下了汗马功劳。

Tā wèi gōngsī de fāzhǎn lì xiàle hànmǎ-gōngláo。

He made great contributions to the company's development.