我是薄荷天然凉我是柠檬天然酸
[wŏ shì bó hé tiān rán liáng wŏ shì níng méng tiān rán suān]
I'm Mint Naturally Cool, I'm Lemon Naturally Sour. This suggests that just as mint has its natural coolness and lemons their natural tartness, this is who they naturally are.