Word: 用心 (yòngxīn) 用心 dictionary entry yòngxīn motive; intention; to be diligent or attentive; careful Full dictionary entry for 用心 Example sentences using 用心 2 sentences, showing page 1 of 1. 她学中文很用心。 Tā xué Zhōngwén hěn yòngxīn. She is very diligent in studying Chinese. 学生们用心学习了很多首诗。 Xuéshengmen yòngxīn xuéxíle hěn duō shǒu shī. The students learned many poems by heart.