柠檬的酸不抵心酸薄荷的凉不抵心凉
[níng méng de suān bù dĭ xīn suān bó hé de liáng bù dĭ xīn liáng]
The sourness of lemons can't match the sorrow of my heart, the coolness of mint can't ease its chill. These words describe a sense of deep emotional pain and loneliness.