效犬馬之勞

Simplified: 效犬马之劳

xiàoquǎnmǎzhīláo ㄒㄧㄠˋ ㄑㄩㄢˇ ㄇㄚˇ ㄓ ㄌㄠˊ

    • to render one's humble services
    • to be at sb's beck and call

Character by character

Sources